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  1. Hjem
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Språkvelger

English

Mohammed M'hamdi

Mohammed M'hamdi

Professor
Institutt for materialteknologi

mohammed.mhamdi@sintef.no
Publikasjoner Formidling

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2023

  • Reiersen, Magnus; Gunnæs, Anette Eleonora; S. Azar, Amin; Diplas, Spyridon; Du, Qiang; M'hamdi, Mohammed. (2023) Accelerated material development for laser powder-bed fusion using the arc melting process. IOP Conference Series: Materials Science and Engineering.
    Vitenskapelig artikkel

2022

  • Du, Qiang; M'hamdi, Mohammed. (2022) Predicting kinetic interface condition for austenite to ferrite transformation by multi-component continuous growth model. Calphad. volum 77.
    Vitenskapelig artikkel
  • Du, Qiang; S. Azar, Amin; M'hamdi, Mohammed. (2022) Kinetic interface condition phase diagram for the rapid solidification of multi-component alloys with an application to additive manufacturing. Calphad. volum 76.
    Vitenskapelig artikkel
  • Marthinsen, Astrid; Graff, Joachim Seland; Syvertsen, Martin; Ellingsen, Kjerstin; M'hamdi, Mohammed. (2022) Towards Formulation of AlSi10Mg Alloy from Incinerator Bottom Ash. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel

2021

  • S. Azar, Amin; Reiersen, Magnus; Hovig, Even Wilberg; M'hamdi, Mohammed; Diplas, Spyridon; Pedersen, Mikkel M.. (2021) A novel approach for enhancing the fatigue lifetime of the components processed by additive manufacturing technologies. Rapid prototyping journal. volum 27 (2).
    Vitenskapelig artikkel
  • Subroto, Tungky; Eskin, Dmitry G.; Miroux, Alexis; Ellingsen, Kjerstin; M'hamdi, Mohammed; Katgerman, Laurens. (2021) Semi-solid Constitutive Parameters and Failure Behavior of a Cast AA7050 Alloy. Metallurgical and Materials Transactions A. volum 52A (2).
    Vitenskapelig artikkel

2020

  • Hovig, Even Wilberg; S. Azar, Amin; M'hamdi, Mohammed; Sørby, Knut. (2020) Mechanical Properties of AlSi10Mg Processed by Laser Powder Bed Fusion at Elevated Temperature. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel
  • Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2020) Modelling macrosegregation modification in dc casting of aluminium alloys in sheet ingots accounting for inlet melt flow, equiaxed grain morphology and transport. IOP Conference Series: Materials Science and Engineering. volum 861.
    Vitenskapelig artikkel

2019

  • Oyama, Kohei; Diplas, Spyridon; M'hamdi, Mohammed; Gunnæs, Anette Eleonora; S. Azar, Amin. (2019) Heat source management in wire-arc additive manufacturing process for Al-Mg and Al-Si alloys. Additive Manufacturing. volum 26.
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2019) Analysis of the Interplay Between Thermo-solutal Convection and Equiaxed Grain Motion in Relation to Macrosegregation Formation in AA5182 Sheet Ingots. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2019) Application of an Equiaxed Grain Growth and Transport Model to Study Macrosegregation in a DC Casting Experiment. Metallurgical and Materials Transactions A. volum 50 (4).
    Vitenskapelig artikkel
  • Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa. (2019) Statistical analysis of structure loss in Czochralski silicon growth. AIP Conference Proceedings. volum 2147 (1).
    Vitenskapelig artikkel
  • Sortland, Øyvind Sunde; M'hamdi, Mohammed; Jomâa, Moez. (2019) Assessment of feature engineering and long short-term memory for structure loss identification from process data in monocrystalline silicon growth by the Czochralski method. 2019.
    Rapport
  • Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Di Sabatino Lundberg, Marisa. (2019) Investigation of pinholes in Czochralski silicon ingots in relation to structure loss. Journal of Crystal Growth. volum 510.
    Vitenskapelig artikkel
  • Zayyoun, Najoua; Pingault, Timothee; Ntsoenzok, Esidor; Laanab, Larbi; Ulyashin, Alexander; S. Azar, Amin; M'hamdi, Mohammed; Blondeau, Jean-Philippe; Ammar, Mohamed-Ramzi. (2019) (111)Si thin layers detachment by stress-induced spallation. Surface Topography: Metrology and Properties. volum 7 (1).
    Vitenskapelig artikkel

2018

  • Ellingsen, Kjerstin; Du, Qiang; M'hamdi, Mohammed; Gihleengen, Britt Elin; Ledal, R.; Tveito, Knut Omdal; Hakonsen, A.. (2018) Experimental Study and Numerical Analysis of Cracking During DC Casting of Large Dimension 7075 Aluminium Billets. The Minerals, Metals & Materials Series. volum Part F4.
    Vitenskapelig artikkel
  • Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik. (2018) High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion. MATEC Web of Conferences. volum 188.
    Vitenskapelig artikkel
  • Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) Investigation of Macrosegregation Formation in Aluminium DC Casting for Different Alloy Systems. Metallurgical and Materials Transactions A. volum 49 (10).
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) Impact of inlet flow on macrosegregation formation accounting for grain motion and morphology evolution in DC casting of aluminium. The Minerals, Metals & Materials Series. volum Part F4.
    Vitenskapelig artikkel
  • Tveito, Knut Omdal; Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings. Metallurgical and Materials Transactions A. volum 49 (7).
    Vitenskapelig artikkel

2017

  • Autruffe, Antoine; M'hamdi, Mohammed; Schindler, Florian; Heinz, Friedemann D.; Ekstrøm, Kai Erik; Schubert, Martin C.; Di Sabatino Lundberg, Marisa; Stokkan, Gaute. (2017) High performance multicrystalline silicon: Grain structure and iron precipitation. Journal of Applied Physics. volum 122 (13).
    Vitenskapelig artikkel
  • Gallien, Benjamin; Albaric, Mickael; Duffar, Thierry; Kakimoto, Koichi; M'hamdi, Mohammed. (2017) Study on the usage of a commercial software (Comsol-Multiphysics®) for dislocation multiplication model. Journal of Crystal Growth. volum 457.
    Vitenskapelig artikkel
  • Stokkan, Gaute; Di Sabatino Lundberg, Marisa; Søndenå, Rune; Juel, Mari; Autruffe, Antoine; Adamczyk, Krzysztof; Skarstad, Hanna Vaksvik; Ekstrøm, Kai Erik; Wiig, Marie Syre; You, Chang Chuan; Haug, Halvard; M'hamdi, Mohammed. (2017) Impurity control in high performance multicrystalline silicon. Physica Status Solidi (a) applications and materials science. volum 214 (7).
    Vitenskapelig artikkel

2016

  • Adamczyk, Krzysztof; Søndenå, Rune; M'hamdi, Mohammed; Autruffe, Antoine; Stokkan, Gaute; Di Sabatino, Marisa. (2016) Grain boundary effect on lifetime in high performance multicrystalline silicon during solar cell processing. Physica Status Solidi. C, Current topics in solid state physics. volum 13 (10-12).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Lindholm, Dag; M'hamdi, Mohammed. (2016) The effect of heating power on impurity formation and transport during the holding phase in a Bridgman furnace for directional solidification of multi-crystalline silicon. Journal of Crystal Growth. volum 444.
    Vitenskapelig artikkel
  • Gao, Bing; Juel, Mari; M'hamdi, Mohammed. (2016) Influence of grown-in defects on final oxygen precipitates during heat treatment of Cz-Si wafer analyzed by a coupled model with the interaction of point defects, oxygen precipitates, and dislocation loops. Journal of Crystal Growth. volum 453.
    Vitenskapelig artikkel

2015

  • Bedel, Marie; Tveito, Knut Omdal; Založnik, Miha; Combeau, Hervé; M'hamdi, Mohammed. (2015) A model study of the impact of the transport of inoculant particles on microstructure formation during solidification. Computational Materials Science. volum 102.
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Coudert, Térence; M'hamdi, Mohammed. (2015) SPH based modelling of oxide and oxide film formation in gravity die castings. IOP Conference Series: Materials Science and Engineering. volum 84:012064.
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Mortensen, Dag; M'hamdi, Mohammed. (2015) Modelling of micro- and macrosegregation for industrial multicomponent aluminium alloys. IOP Conference Series: Materials Science and Engineering. volum 84 (1).
    Vitenskapelig artikkel

2014

  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed. (2014) Anisotropic study of thermal stresses induced by diameter fluctuation during Czochralski silicon single crystal growth. Journal of Crystal Growth. volum 400.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Lindholm, Dag; M'hamdi, Mohammed. (2014) A novel method for gas flow and impurity control in directional solidification of multi-crystalline silicon. Journal of Crystal Growth. volum 399.
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; M'hamdi, Mohammed; Tveito, Knut Omdal; Mortensen, Dag. (2014) Modelling of Micro- and Macrosegregation in Multicomponent Aluminium Alloys Accounting for Secondary Phase Formation. Light Metals 2014, Proceedings of the symposia sponsored by the TMS Aluminum Committee at the TMS 2014 Annual Meeting & Exhibition.
    Vitenskapelig kapittel/artikkel
  • Mortensen, Dag; M'hamdi, Mohammed; Ellingsen, Kjerstin; Tveito, Knut Omdal; Pedersen, Liss; Grasmo, Geir. (2014) Macrosegregation modelling of DC-casting including grain motion and surface exudation. Light Metals 2014, Proceedings of the symposia sponsored by the TMS Aluminum Committee at the TMS 2014 Annual Meeting & Exhibition.
    Vitenskapelig kapittel/artikkel
  • Nordmark, Arne; Ellingsen, Kjerstin; Johansson, Anders U.; M'hamdi, Mohammed; Kvithyld, Anne; Marson, Andrew; S. Azar, Amin. (2014) Tensile properties and hot-tearing tendencies of 3xxx alloys. Materials Science Forum. volum 794 - 796 (2).
    Vitenskapelig artikkel

2013

  • Asadi Noghabi, Omidreza; Jomâa, Moez; M'hamdi, Mohammed. (2013) Analysis of W-shape melt/crystal interface formation in Czochralski silicon crystal growth. Journal of Crystal Growth. volum 362 (1).
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2013) Impact of diameter fluctuations on thermal stresses during Czochralski silicon growth. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2013) Sensitivity analyses of furnace material properties in the Czochralski crystal growth method for silicon. Measurement Science and Technology. volum 24 (1).
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Dalaker, Halvor; Syvertsen, Martin; Gouttebroze, Sylvain; M'hamdi, Mohammed. (2013) Optimization of silicon crystallization in a Bridgman growth furnace by numerical modeling. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Lindholm, Dag; Sørheim, Einar Arne; Mortensen, Dag; M'hamdi, Mohammed. (2013) 3D dynamic simulation of heat transfer and melt flow in an inductively heated crystallization furnace for mc-silicon with PID temperature control. Journal of Crystal Growth. volum 383.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; M'hamdi, Mohammed. (2013) Effect of flow pattern on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Cochard, Julien; Yonenaga, I; M'hamdi, Mohammed; Zhang, Zhiliang. (2013) A novel constitutive model for semiconductors: The case of silicon. Journal of the Mechanics and Physics of Solids. volum 61 (12).
    Vitenskapelig artikkel
  • M'hamdi, Mohammed; Gouttebroze, Sylvain; Fjær, Hallvard Gustav. (2013) 3D modelling of stresses and deformations during crystallisation of silicon accounting for ingot-crucible interactions. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Mihanyar, Shifteh; Ellingsen, Kjerstin; M'hamdi, Mohammed. (2013) Assessment of the impact of macrosegregation on the hot-tearing tendency. International Journal of Cast Metals Research.
    Vitenskapelig artikkel
  • Mortensen, Dag; Henriksen, Bjørn Rune; M'hamdi, Mohammed; Fjær, Hallvard Gustav. (2013) Coupled modelling of air-gap formation and surface exudation during extrusion ingot DC-casting. Essential Readings in Light Metals, Cast Shop for Aluminum Production, Vol. 3.
    Vitenskapelig kapittel/artikkel

2012

  • Tveito, Knut Omdal; Bedel, M; Zaloznik, M; Combeau, Herve; M'hamdi, Mohammed. (2012) The effect of finite microscopic liquid solute diffusion on macrosegregation formation. IOP Conference Series: Earth and Environmental Science (EES). volum 27.
    Vitenskapelig artikkel
  • Tveito, Knut Omdal; Bedel, M; Zaloznik, M; Combeau, Herve; M'hamdi, Mohammed; Kumar, Ashwini; Dutta, P. (2012) Numerical study of the impact of inoculant and grain transport on macrosegregation and microstructure formation during solidification of an Al-22%Cu alloy. IOP Conference Series: Earth and Environmental Science (EES). volum 33.
    Vitenskapelig artikkel

2011

  • Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2011) Effect of crystal and crucible rotations on the interface shape of Czochralski grown silicon single crystals. Journal of Crystal Growth. volum 318 (1).
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; M'hamdi, Mohammed. (2011) Effect of flow pattern on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon. Journal of Crystal Growth.
    Vitenskapelig artikkel
  • Boulfrad, Yacine; Stokkan, Gaute; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Arnberg, Lars. (2011) Modeling of lifetime distribution in a multicrystalline silicon ingot. Solid State Phenomena. volum 178-179.
    Vitenskapelig artikkel
  • M'hamdi, Mohammed; Gouttebroze, Sylvain; Fjær, Hallvard Gustav. (2011) Thermo-mechanical analysis of the ingot-crucible contact during multi-crystalline silicon ingot casting. Journal of Crystal Growth. volum 318 (1).
    Vitenskapelig artikkel
  • Mihanyar, Shifteh; Mo, Asbjørn; M'hamdi, Mohammed; Ellingsen, Kjerstin. (2011) Modeling of De-cohesion and the Initiation of Hot Tearing in Coherent Mushy Zones of Metallic Alloys. Metallurgical and Materials Transactions A. volum 42A (7).
    Vitenskapelig artikkel

2010

  • Cochard, Julien; Yonenaga, Ichiro; Gouttebroze, Sylvain; M'hamdi, Mohammed; Zhang, Zhiliang. (2010) Constitutive modeling of intrinsic and oxygen-contaminated silicon monocrystals in easy glide. Journal of Applied Physics. volum 108 (10).
    Vitenskapelig artikkel
  • Onsøien, Morten Ingar; M'hamdi, Mohammed; Akselsen, Odd Magne. (2010) Residual Stresses in Weld Thermal Cycle Simulated Specimens of X70 Pipeline Steel. Welding Journal. volum 89 (6).
    Vitenskapelig artikkel

2009

  • Ellingsen, Kjerstin; Dons, Anne Lise; M'hamdi, Mohammed; Mo, Asbjørn; Mortensen, Dag. (2009) New approach to quantifying solidification path in modelling of macrosegregation in multicomponent Al alloys. International Journal of Cast Metals Research. volum 22 (1-4).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; M'hamdi, Mohammed; Mortensen, Dag; Fjær, Hallvard Gustav. (2009) Analysis of the impact of macrosegregation on hot tearing conditions during DC casting of aluminium alloys. International Journal of Cast Metals Research. volum 22 (1-4).
    Vitenskapelig artikkel
  • Onsøien, Morten Ingar; M'hamdi, Mohammed; Mo, Asbjørn. (2009) A CCT Diagram for an Offshore Pipeline Steel of X70 Type. Welding Journal. volum 88 (1).
    Vitenskapelig artikkel

2007

  • M'hamdi, Mohammed. (2007) Thermo-mechanical analysis of multicrystaline silicon ingot casting. Proceeding of the 22nd European Photovoltaic Solar Energy conference.
    Vitenskapelig kapittel/artikkel

2005

  • M'hamdi, Mohammed; Mo, Asbjørn. (2005) On modelling the interplay between microporosity formation and hot tearing in aluminium direct-chill casting. Materials Science & Engineering: A. volum 413.
    Vitenskapelig artikkel

Vitenskapelige artikler

  • Reiersen, Magnus; Gunnæs, Anette Eleonora; S. Azar, Amin; Diplas, Spyridon; Du, Qiang; M'hamdi, Mohammed. (2023) Accelerated material development for laser powder-bed fusion using the arc melting process. IOP Conference Series: Materials Science and Engineering.
    Vitenskapelig artikkel
  • Du, Qiang; M'hamdi, Mohammed. (2022) Predicting kinetic interface condition for austenite to ferrite transformation by multi-component continuous growth model. Calphad. volum 77.
    Vitenskapelig artikkel
  • Du, Qiang; S. Azar, Amin; M'hamdi, Mohammed. (2022) Kinetic interface condition phase diagram for the rapid solidification of multi-component alloys with an application to additive manufacturing. Calphad. volum 76.
    Vitenskapelig artikkel
  • Marthinsen, Astrid; Graff, Joachim Seland; Syvertsen, Martin; Ellingsen, Kjerstin; M'hamdi, Mohammed. (2022) Towards Formulation of AlSi10Mg Alloy from Incinerator Bottom Ash. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel
  • S. Azar, Amin; Reiersen, Magnus; Hovig, Even Wilberg; M'hamdi, Mohammed; Diplas, Spyridon; Pedersen, Mikkel M.. (2021) A novel approach for enhancing the fatigue lifetime of the components processed by additive manufacturing technologies. Rapid prototyping journal. volum 27 (2).
    Vitenskapelig artikkel
  • Subroto, Tungky; Eskin, Dmitry G.; Miroux, Alexis; Ellingsen, Kjerstin; M'hamdi, Mohammed; Katgerman, Laurens. (2021) Semi-solid Constitutive Parameters and Failure Behavior of a Cast AA7050 Alloy. Metallurgical and Materials Transactions A. volum 52A (2).
    Vitenskapelig artikkel
  • Hovig, Even Wilberg; S. Azar, Amin; M'hamdi, Mohammed; Sørby, Knut. (2020) Mechanical Properties of AlSi10Mg Processed by Laser Powder Bed Fusion at Elevated Temperature. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel
  • Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2020) Modelling macrosegregation modification in dc casting of aluminium alloys in sheet ingots accounting for inlet melt flow, equiaxed grain morphology and transport. IOP Conference Series: Materials Science and Engineering. volum 861.
    Vitenskapelig artikkel
  • Oyama, Kohei; Diplas, Spyridon; M'hamdi, Mohammed; Gunnæs, Anette Eleonora; S. Azar, Amin. (2019) Heat source management in wire-arc additive manufacturing process for Al-Mg and Al-Si alloys. Additive Manufacturing. volum 26.
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2019) Analysis of the Interplay Between Thermo-solutal Convection and Equiaxed Grain Motion in Relation to Macrosegregation Formation in AA5182 Sheet Ingots. The Minerals, Metals & Materials Series.
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2019) Application of an Equiaxed Grain Growth and Transport Model to Study Macrosegregation in a DC Casting Experiment. Metallurgical and Materials Transactions A. volum 50 (4).
    Vitenskapelig artikkel
  • Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa. (2019) Statistical analysis of structure loss in Czochralski silicon growth. AIP Conference Proceedings. volum 2147 (1).
    Vitenskapelig artikkel
  • Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Di Sabatino Lundberg, Marisa. (2019) Investigation of pinholes in Czochralski silicon ingots in relation to structure loss. Journal of Crystal Growth. volum 510.
    Vitenskapelig artikkel
  • Zayyoun, Najoua; Pingault, Timothee; Ntsoenzok, Esidor; Laanab, Larbi; Ulyashin, Alexander; S. Azar, Amin; M'hamdi, Mohammed; Blondeau, Jean-Philippe; Ammar, Mohamed-Ramzi. (2019) (111)Si thin layers detachment by stress-induced spallation. Surface Topography: Metrology and Properties. volum 7 (1).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Du, Qiang; M'hamdi, Mohammed; Gihleengen, Britt Elin; Ledal, R.; Tveito, Knut Omdal; Hakonsen, A.. (2018) Experimental Study and Numerical Analysis of Cracking During DC Casting of Large Dimension 7075 Aluminium Billets. The Minerals, Metals & Materials Series. volum Part F4.
    Vitenskapelig artikkel
  • Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik. (2018) High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion. MATEC Web of Conferences. volum 188.
    Vitenskapelig artikkel
  • Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) Investigation of Macrosegregation Formation in Aluminium DC Casting for Different Alloy Systems. Metallurgical and Materials Transactions A. volum 49 (10).
    Vitenskapelig artikkel
  • Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) Impact of inlet flow on macrosegregation formation accounting for grain motion and morphology evolution in DC casting of aluminium. The Minerals, Metals & Materials Series. volum Part F4.
    Vitenskapelig artikkel
  • Tveito, Knut Omdal; Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha. (2018) A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings. Metallurgical and Materials Transactions A. volum 49 (7).
    Vitenskapelig artikkel
  • Autruffe, Antoine; M'hamdi, Mohammed; Schindler, Florian; Heinz, Friedemann D.; Ekstrøm, Kai Erik; Schubert, Martin C.; Di Sabatino Lundberg, Marisa; Stokkan, Gaute. (2017) High performance multicrystalline silicon: Grain structure and iron precipitation. Journal of Applied Physics. volum 122 (13).
    Vitenskapelig artikkel
  • Gallien, Benjamin; Albaric, Mickael; Duffar, Thierry; Kakimoto, Koichi; M'hamdi, Mohammed. (2017) Study on the usage of a commercial software (Comsol-Multiphysics®) for dislocation multiplication model. Journal of Crystal Growth. volum 457.
    Vitenskapelig artikkel
  • Stokkan, Gaute; Di Sabatino Lundberg, Marisa; Søndenå, Rune; Juel, Mari; Autruffe, Antoine; Adamczyk, Krzysztof; Skarstad, Hanna Vaksvik; Ekstrøm, Kai Erik; Wiig, Marie Syre; You, Chang Chuan; Haug, Halvard; M'hamdi, Mohammed. (2017) Impurity control in high performance multicrystalline silicon. Physica Status Solidi (a) applications and materials science. volum 214 (7).
    Vitenskapelig artikkel
  • Adamczyk, Krzysztof; Søndenå, Rune; M'hamdi, Mohammed; Autruffe, Antoine; Stokkan, Gaute; Di Sabatino, Marisa. (2016) Grain boundary effect on lifetime in high performance multicrystalline silicon during solar cell processing. Physica Status Solidi. C, Current topics in solid state physics. volum 13 (10-12).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Lindholm, Dag; M'hamdi, Mohammed. (2016) The effect of heating power on impurity formation and transport during the holding phase in a Bridgman furnace for directional solidification of multi-crystalline silicon. Journal of Crystal Growth. volum 444.
    Vitenskapelig artikkel
  • Gao, Bing; Juel, Mari; M'hamdi, Mohammed. (2016) Influence of grown-in defects on final oxygen precipitates during heat treatment of Cz-Si wafer analyzed by a coupled model with the interaction of point defects, oxygen precipitates, and dislocation loops. Journal of Crystal Growth. volum 453.
    Vitenskapelig artikkel
  • Bedel, Marie; Tveito, Knut Omdal; Založnik, Miha; Combeau, Hervé; M'hamdi, Mohammed. (2015) A model study of the impact of the transport of inoculant particles on microstructure formation during solidification. Computational Materials Science. volum 102.
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Coudert, Térence; M'hamdi, Mohammed. (2015) SPH based modelling of oxide and oxide film formation in gravity die castings. IOP Conference Series: Materials Science and Engineering. volum 84:012064.
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Mortensen, Dag; M'hamdi, Mohammed. (2015) Modelling of micro- and macrosegregation for industrial multicomponent aluminium alloys. IOP Conference Series: Materials Science and Engineering. volum 84 (1).
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed. (2014) Anisotropic study of thermal stresses induced by diameter fluctuation during Czochralski silicon single crystal growth. Journal of Crystal Growth. volum 400.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Lindholm, Dag; M'hamdi, Mohammed. (2014) A novel method for gas flow and impurity control in directional solidification of multi-crystalline silicon. Journal of Crystal Growth. volum 399.
    Vitenskapelig artikkel
  • Nordmark, Arne; Ellingsen, Kjerstin; Johansson, Anders U.; M'hamdi, Mohammed; Kvithyld, Anne; Marson, Andrew; S. Azar, Amin. (2014) Tensile properties and hot-tearing tendencies of 3xxx alloys. Materials Science Forum. volum 794 - 796 (2).
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; Jomâa, Moez; M'hamdi, Mohammed. (2013) Analysis of W-shape melt/crystal interface formation in Czochralski silicon crystal growth. Journal of Crystal Growth. volum 362 (1).
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2013) Impact of diameter fluctuations on thermal stresses during Czochralski silicon growth. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Asadi Noghabi, Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2013) Sensitivity analyses of furnace material properties in the Czochralski crystal growth method for silicon. Measurement Science and Technology. volum 24 (1).
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Dalaker, Halvor; Syvertsen, Martin; Gouttebroze, Sylvain; M'hamdi, Mohammed. (2013) Optimization of silicon crystallization in a Bridgman growth furnace by numerical modeling. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; Lindholm, Dag; Sørheim, Einar Arne; Mortensen, Dag; M'hamdi, Mohammed. (2013) 3D dynamic simulation of heat transfer and melt flow in an inductively heated crystallization furnace for mc-silicon with PID temperature control. Journal of Crystal Growth. volum 383.
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; M'hamdi, Mohammed. (2013) Effect of flow pattern on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Cochard, Julien; Yonenaga, I; M'hamdi, Mohammed; Zhang, Zhiliang. (2013) A novel constitutive model for semiconductors: The case of silicon. Journal of the Mechanics and Physics of Solids. volum 61 (12).
    Vitenskapelig artikkel
  • M'hamdi, Mohammed; Gouttebroze, Sylvain; Fjær, Hallvard Gustav. (2013) 3D modelling of stresses and deformations during crystallisation of silicon accounting for ingot-crucible interactions. Journal of Crystal Growth. volum 362.
    Vitenskapelig artikkel
  • Mihanyar, Shifteh; Ellingsen, Kjerstin; M'hamdi, Mohammed. (2013) Assessment of the impact of macrosegregation on the hot-tearing tendency. International Journal of Cast Metals Research.
    Vitenskapelig artikkel
  • Tveito, Knut Omdal; Bedel, M; Zaloznik, M; Combeau, Herve; M'hamdi, Mohammed. (2012) The effect of finite microscopic liquid solute diffusion on macrosegregation formation. IOP Conference Series: Earth and Environmental Science (EES). volum 27.
    Vitenskapelig artikkel
  • Tveito, Knut Omdal; Bedel, M; Zaloznik, M; Combeau, Herve; M'hamdi, Mohammed; Kumar, Ashwini; Dutta, P. (2012) Numerical study of the impact of inoculant and grain transport on macrosegregation and microstructure formation during solidification of an Al-22%Cu alloy. IOP Conference Series: Earth and Environmental Science (EES). volum 33.
    Vitenskapelig artikkel
  • Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomâa, Moez. (2011) Effect of crystal and crucible rotations on the interface shape of Czochralski grown silicon single crystals. Journal of Crystal Growth. volum 318 (1).
    Vitenskapelig artikkel
  • Bellmann, Martin Pawel; M'hamdi, Mohammed. (2011) Effect of flow pattern on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon. Journal of Crystal Growth.
    Vitenskapelig artikkel
  • Boulfrad, Yacine; Stokkan, Gaute; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Arnberg, Lars. (2011) Modeling of lifetime distribution in a multicrystalline silicon ingot. Solid State Phenomena. volum 178-179.
    Vitenskapelig artikkel
  • M'hamdi, Mohammed; Gouttebroze, Sylvain; Fjær, Hallvard Gustav. (2011) Thermo-mechanical analysis of the ingot-crucible contact during multi-crystalline silicon ingot casting. Journal of Crystal Growth. volum 318 (1).
    Vitenskapelig artikkel
  • Mihanyar, Shifteh; Mo, Asbjørn; M'hamdi, Mohammed; Ellingsen, Kjerstin. (2011) Modeling of De-cohesion and the Initiation of Hot Tearing in Coherent Mushy Zones of Metallic Alloys. Metallurgical and Materials Transactions A. volum 42A (7).
    Vitenskapelig artikkel
  • Cochard, Julien; Yonenaga, Ichiro; Gouttebroze, Sylvain; M'hamdi, Mohammed; Zhang, Zhiliang. (2010) Constitutive modeling of intrinsic and oxygen-contaminated silicon monocrystals in easy glide. Journal of Applied Physics. volum 108 (10).
    Vitenskapelig artikkel
  • Onsøien, Morten Ingar; M'hamdi, Mohammed; Akselsen, Odd Magne. (2010) Residual Stresses in Weld Thermal Cycle Simulated Specimens of X70 Pipeline Steel. Welding Journal. volum 89 (6).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; Dons, Anne Lise; M'hamdi, Mohammed; Mo, Asbjørn; Mortensen, Dag. (2009) New approach to quantifying solidification path in modelling of macrosegregation in multicomponent Al alloys. International Journal of Cast Metals Research. volum 22 (1-4).
    Vitenskapelig artikkel
  • Ellingsen, Kjerstin; M'hamdi, Mohammed; Mortensen, Dag; Fjær, Hallvard Gustav. (2009) Analysis of the impact of macrosegregation on hot tearing conditions during DC casting of aluminium alloys. International Journal of Cast Metals Research. volum 22 (1-4).
    Vitenskapelig artikkel
  • Onsøien, Morten Ingar; M'hamdi, Mohammed; Mo, Asbjørn. (2009) A CCT Diagram for an Offshore Pipeline Steel of X70 Type. Welding Journal. volum 88 (1).
    Vitenskapelig artikkel
  • M'hamdi, Mohammed; Mo, Asbjørn. (2005) On modelling the interplay between microporosity formation and hot tearing in aluminium direct-chill casting. Materials Science & Engineering: A. volum 413.
    Vitenskapelig artikkel

Del av bok/rapport

  • Ellingsen, Kjerstin; M'hamdi, Mohammed; Tveito, Knut Omdal; Mortensen, Dag. (2014) Modelling of Micro- and Macrosegregation in Multicomponent Aluminium Alloys Accounting for Secondary Phase Formation. Light Metals 2014, Proceedings of the symposia sponsored by the TMS Aluminum Committee at the TMS 2014 Annual Meeting & Exhibition.
    Vitenskapelig kapittel/artikkel
  • Mortensen, Dag; M'hamdi, Mohammed; Ellingsen, Kjerstin; Tveito, Knut Omdal; Pedersen, Liss; Grasmo, Geir. (2014) Macrosegregation modelling of DC-casting including grain motion and surface exudation. Light Metals 2014, Proceedings of the symposia sponsored by the TMS Aluminum Committee at the TMS 2014 Annual Meeting & Exhibition.
    Vitenskapelig kapittel/artikkel
  • Mortensen, Dag; Henriksen, Bjørn Rune; M'hamdi, Mohammed; Fjær, Hallvard Gustav. (2013) Coupled modelling of air-gap formation and surface exudation during extrusion ingot DC-casting. Essential Readings in Light Metals, Cast Shop for Aluminum Production, Vol. 3.
    Vitenskapelig kapittel/artikkel
  • M'hamdi, Mohammed. (2007) Thermo-mechanical analysis of multicrystaline silicon ingot casting. Proceeding of the 22nd European Photovoltaic Solar Energy conference.
    Vitenskapelig kapittel/artikkel

Rapport

  • Sortland, Øyvind Sunde; M'hamdi, Mohammed; Jomâa, Moez. (2019) Assessment of feature engineering and long short-term memory for structure loss identification from process data in monocrystalline silicon growth by the Czochralski method. 2019.
    Rapport

Formidling

2022

  • Vitenskapelig foredrag
    Marthinsen, Astrid; Graff, Joachim Seland; Syvertsen, Martin; Ellingsen, Kjerstin; Mhamdi, Mohammed. (2022) Towards formulation of AlSi10Mg alloy from Incinerator Bottom Ash. TMS 2022 . TMS; Anaheim. 2022-02-27 - 2022-03-03.
  • Vitenskapelig foredrag
    Marthinsen, Astrid; Mhamdi, Mohammed. (2022) Extention of microstructure modelling framework with application to the impact of recycling. SFI PhysMet RA3 Technical meeting . SFI PhysMet; Digital meeting. 2022-03-29 - 2022-04-29.
  • Vitenskapelig foredrag
    Reiersen, Magnus; Gunnæs, Anette Eleonora; S. Azar, Amin; Diplas, Spyridon; Du, Qiang; M'hamdi, Mohammed. (2022) Accelerated material development for laser powder-bed fusion using the arc melting process. 6th International Conference on Advances in Solidification Processes ; Le Bischenberg. 2022-06-20 - 2022-06-24.

2021

  • Vitenskapelig foredrag
    Warden, Gabriela Kazimiera; Juel, Mari; Gawel, Bartlomiej Adam; M'hamdi, Mohammed; Di Sabatino Lundberg, Marisa. (2021) Measuring viscosity of fused quartz: challenges and method development. Norwegian Solar Cell Conference (NSCC) ; 2021-11-01 - 2021-11-02.

2019

  • Poster
    Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa. (2019) Statistical Analysis of Structure Loss in Czochralski Silicon Growth. SiliconPV 2019 ; Leuven. 2019-04-07 - 2019-04-10.
  • Vitenskapelig foredrag
    Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa. (2019) Structure Loss in Czochralski Silicon Growth: Statistical Analysis of Growth Parameters and Modeling of Thermal Fluctuations. Norwegian Solar Cell Conference 2019 . Research Centre for Sustainable Solar Cell Technology; Son, Norway. 2019-05-20 - 2019-05-21.

2018

  • Faglig foredrag
    M'hamdi, Mohammed; S. Azar, Amin; Ma, Xiang; Andreassen, Erik. (2018) Design for Additive Manufacturing (DfAM): Material, process, properties and modelling tools. Subsea Valley Conference ; Fornebu. 2018-03-21 - 2018-03-22.
  • Vitenskapelig foredrag
    M'hamdi, Mohammed; S. Azar, Amin; Ma, Xiang; Andreassen, Erik. (2018) Design for Additive Manufacturing: Material, process, properties and numerical modelling tools. Nasjonal konferanse for materialteknologi 2018 . Norsk Materialteknisk Selskap/Norsk Metallografisk Forening; Oslo. 2018-05-30 - 2018-05-31.
  • Poster
    Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Jomâa, Moez; Di Sabatino Lundberg, Marisa. (2018) Investigation of structure loss in industrial Czochralski silicon ingots: Effect of pores. 10th International Workshop on Crystalline Silicon for Solar Cells . Institute for Materials Research, Tohoku University; Sendai. 2018-04-08 - 2018-04-11.
  • Vitenskapelig foredrag
    Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Jomâa, Moez; Di Sabatino Lundberg, Marisa. (2018) Structure loss in Czochralski silicon ingots. Norwegian Solar Cell Conference 2018 . SuSolTech; Son. 2018-05-02 - 2018-05-03.

2017

  • Vitenskapelig foredrag
    Stokkan, Gaute; Di Sabatino Lundberg, Marisa; Adamczyk, Krzysztof Jan; Søndenå, Rune; M'hamdi, Mohammed. (2017) Impurity control in high performance multicrystalline silicon. GADEST ; 2017-10-01 - 2017-10-06.

2016

  • Faglig foredrag
    Gouttebroze, Sylvain; Du, Qiang; M'hamdi, Mohammed. (2016) Sistruc: A microstructure model for optimization of silicon materials. Silicon for the Chemical and Solar Industry XIII ; 2016-06-14 - 2016-06-16.

2012

  • Vitenskapelig foredrag
    Bellmann, Martin Pawel; M'hamdi, Mohammed; Asadi Noghabi, Omidreza; Gouttebroze, Sylvain. (2012) Modellierung von Kristallisationsprozessen zur Herstellung von Silizium für die Photovoltaik. Anual German Crystal Growth Conference 2012 ; Freiberg. 2012-03-07 - 2012-03-09.
  • Vitenskapelig foredrag
    Bellmann, Martin Pawel; M'hamdi, Mohammed; Asadi Noghabi, Omidreza; Gouttebroze, Sylvain; Jomâa, Moez. (2012) Numerical simulation of crystallization processes for the production of silicon for photovoltaic applications. Collaborative Conference on Crystal Growth ; Orlando. 2012-12-11 - 2012-12-14.
  • Vitenskapelig foredrag
    Bellmann, Martin Pawel; M'hamdi, Mohammed; Asadi Noghabi, Omidreza; Gouttebroze, Sylvain; Jomâa, Moez. (2012) Numerical simulation of crystallization processes for the production of silicon for photovoltaic applications. Physics conference TIM12 ; Timisoara. 2012-11-27 - 2012-11-30.

2011

  • Vitenskapelig foredrag
    Boulfrad, Yacine; Stokkan, Gaute; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Arnberg, Lars. (2011) Modeling of lifetime distribution in mc-Si ingot based on combined effect of iron and dislocations. Nordic workshop on defect engineering of silicon . IFE; Skeikampen. 2011-03-13 - 2011-03-15.

2010

  • Populærvitenskapelig foredrag
    Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomaa, Moez. (2010) A comparative study of the impact of the driving forces on melt convection during silicon CZ crystal growth. Nasjonal konferanse for Materialteknologi ; Oslo. 2010-06-03 - 2010-06-04.
  • Poster
    Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomaa, Moez. (2010) Effect of crystal and crucible rotations on global heat transfer and melt convection during Czochralski silicon crystal growth. Renewable Energy Research Conference . NTNU, SINTEF, IFE; Trondheim. 2010-06-07 - 2010-06-08.
  • Poster
    Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomaa, Moez. (2010) Sensitivity Analysis of Furnace Material Properties in Czochralski Silicon Crystal Growth. European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) ; Valencia. 2010-09-06 - 2010-09-10.
  • Populærvitenskapelig foredrag
    Asadi, Noghabi Omidreza; M'hamdi, Mohammed; Jomaa, Moez. (2010) ffect of crystal and crucible rotations on the interface shape of Czochralski grown silicon single crystal. 16th International Conference on Crystal Growth ; Beijing. 2010-08-08 - 2010-08-13.
  • Poster
    Boulfrad, Yacine; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Arnberg, Lars. (2010) Modeling of Iron Distribution in a Mc-Si Ingot Based on Thermal History. 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion ; Valencia. 2010-09-06 - 2010-09-10.
  • Vitenskapelig foredrag
    Cochard, Julien; Zhang, Zhiliang; M'hamdi, Mohammed. (2010) Mapping of Stress, Strain, Dislocation Density and Fracture Probability in Silicon Multicrystals. 23rd Nordic Seminar on Computational Mechanics ; KTH, Stockholm. 2010-10-21 - 2010-10-22.

2009

  • Vitenskapelig foredrag
    Bellmann, Martin Pawel; M'hamdi, Mohammed; Ellingsen, Kjerstin; Solheim, Arve; Sørheim, Håvard; Arnberg, Lars. (2009) Analysis of the impact of crucible properties on thermally induced stresses in directionally solidified multi-crystalline silicon ingots. 24rd European Photovoltaic Solar Energy Conference ; 2009-09-20.
  • Poster
    Cochard, Julien; Gouttebroze, Sylvain; Dumoulin, Stephane C.; M'hamdi, Mohammed; Zhang, Zhiliang. (2009) MECHANICAL MODELING OF IMPURE SILICON MATERIALS. 24th EUPVSEC ; Hamburg. 2009-09-21 - 2009-09-25.
  • Poster
    Cochard, Julien; Yonenaga, Ichiro; Gouttebroze, Sylvain; M'hamdi, Mohammed; Zhang, Zhiliang. (2009) Constitutive Modelling of silicon using crystal plasticity. 3rd International Workshop on Crystalline Silicon Solar Cells . SINTEF; Trondheim. 2009-06-03 - 2009-06-05.
  • Vitenskapelig foredrag
    Gouttebroze, Sylvain; M'hamdi, Mohammed. (2009) CONSTITUTIVE MODELLING OF SILICON: PARAMETERS IDENTIFICATION OF CLASSICAL MODELS USING CRYSTAL PLASTICITY. 3rd International Workshop on Crystalline Silicon Solar Cells . SINTEF/NTNU; Trondheim. 2009-06-03 - 2009-06-05.
  • Vitenskapelig foredrag
    Løvvik, Ole Martin; M'hamdi, Mohammed. (2009) SHEAR STRESS IN CRYSTALLINE SILICON FROM AB INITIO CALCULATIONS. 3rd International Workshop on Crystalline Silicon Solar Cells . SINTEF/NTNU; Trondheim, Norway. 2009-06-03 - 2009-06-05.
  • Vitenskapelig foredrag
    Løvvik, Ole Martin; M'hamdi, Mohammed. (2009) Shear stress in crystalline silicon from ab initio calculations. the3rd International workshop on crystalline silicon solar cells, CSSC-3 ; Trondheim, Norway. 2009-06-03 - 2009-06-05.
  • Vitenskapelig foredrag
    M'hamdi, Mohammed; Ellingsen, Kjerstin. (2009) Thermal and mechanical analysis of directionally solidified silicon ingots in silica and silicon nitride crucibles. 3rd International Workshop on Crystalline Silicon Solar Cells . SINTEF/NTNU; Trondheim. 2009-06-03 - 2009-06-05.
  • Vitenskapelig foredrag
    Nordhagen, Håkon Ottar; Gouttebroze, Sylvain; Dumoulin, Stephane; M'hamdi, Mohammed. (2009) ANALYSIS OF MULTI-CRYSTALLINE SILICON DEFORMATION DURING 4-POINT BENDING TEST BY FINITE ELEMENT MODELING. 3rd International Workshop on Crystalline Silicon Solar Cells . SINTEF/NTNU; Trondheim. 2009-06-03.

2008

  • Poster
    Cochard, Julien; Gouttebroze, Sylvain; Dumoulin, Stephane; M'hamdi, Mohammed; Zhang, Zhiliang. (2008) A multicrystal model for the viscoplastic deformation of silicon at high temperature. 23rd EUPVSEC ; Valencia. 2008-09-01 - 2008-09-05.

2007

  • Vitenskapelig foredrag
    Ellingsen, Kjerstin; M'hamdi, Mohammed; Mo, Asbjørn; Nielsen, Øyvind. (2007) Quantification of the mushy zone permeability in industrial aluminium alloys. EUROMAT 2007 ; Nuremberg, Germany. 2007-09-10 - 2007-09-13.
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