Browsing SINTEF Open by Author "M'hamdi, Mohammed"
Now showing items 1-11 of 11
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Heat source management in wire-arc additive manufacturing process for Al-Mg and Al-Si alloys
Oyama, Kohei; Diplas, Spyridon; M'hamdi, Mohammed; Gunnæs, Anette Eleonora; S. Azar, Amin (Journal article; Peer reviewed, 2019)Modelling of wire-arc additive manufacturing process is an effective way for adapting the optimum parameters as well as understanding and managing the sequences of layer-by-layer deposition. Some of these parameters such ... -
High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion
Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik (Journal article, 2018)Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, ... -
High performance multicrystalline silicon: Grain structure and iron precipitation
Autruffe, Antoine; M'hamdi, Mohammed; Schindler, Florian; Heinz, Friedemann D.; Ekstrøm, Kai Erik; Schubert, Martin C.; Di Sabatino Lundberg, Marisa; Stokkan, Gaute (Peer reviewed; Journal article, 2017)A study of the spatial occurrence of iron precipitation in a high performance multicrystalline silicon (HPMC-Si) sample is presented. The separated effects of grain-boundaries, sparse intra-granular dislocations, and ... -
Impact of inlet flow on macrosegregation formation accounting for grain motion and morphology evolution in DC casting of aluminium
Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2018)Several transport mechanisms contribute to macrosegregation formation in Direct Chill (DC) casting of aluminium. The latter include solidification shrinkage induced flow, thermal-solutal convection and grain motion. The ... -
Investigation of Macrosegregation Formation in Aluminium DC Casting for Different Alloy Systems
Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2018)Direct chill (DC) casting of aluminum involves alloys employing different solute elements. In this article, a qualitative analysis and comparison of macrosegregation formation is presented for three different alloy systems: ... -
Investigation of pinholes in Czochralski silicon ingots in relation to structure loss
Sortland, Øyvind Sunde; Øvrelid, Eivind Johannes; M'hamdi, Mohammed; Di Sabatino Lundberg, Marisa (Journal article; Peer reviewed, 2019) -
Kinetic interface condition phase diagram for the rapid solidification of multi-component alloys with an application to additive manufacturing
Du, Qiang; S. Azar, Amin; M'hamdi, Mohammed (Peer reviewed; Journal article, 2022)Solid-liquid Interface response function or the analysis of kinetic interfacial conditions under rapid solidification setting occupies a central role in solidification research. With the concepts of solute drag and solute ... -
Mechanical Properties of AlSi10Mg Processed by Laser Powder Bed Fusion at Elevated Temperature
Hovig, Even Wilberg; S. Azar, Amin; M'hamdi, Mohammed; Sørby, Knut (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2020)AlSi10Mg processed by laser powder bed fusion is expected to have remarkable mechanical properties due to the dominant cellular microstructure. However, the as-processed material is often both anisotropic and containing ... -
A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings
Tveito, Knut Omdal; Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2018)Macrosegregation is a result of the interplay of various transport mechanisms, including natural convection, solidification shrinkage, and grain motion. Experimental observations also indicate the impact of grain morphology, ... -
Statistical analysis of structure loss in Czochralski silicon growth
Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2019)In Czochralski monocrystalline silicon growth, structure loss (SL) is the loss of the mono-crystalline structure. It represents a significant loss of productivity. In this work, this phenomenon is investigated by statistical ... -
Statistical Analysis of Structure Loss in Czochralski Silicon Growth
Sortland, Øyvind Sunde; Jomâa, Moez; M'hamdi, Mohammed; Øvrelid, Eivind Johannes; Di Sabatino Lundberg, Marisa (SiliconPV 2019, THE 9TH INTERNATIONAL CONFERENCE ON CRYSTALLINE SILICON PHOTOVOLTAICS;2019, Chapter; Peer reviewed, 2019)In Czochralski monocrystalline silicon growth, structure loss (SL) is the loss of the mono-crystalline structure. It represents a significant loss of productivity. In this work, this phenomenon is investigated by statistical ...