Documents disponibles écrits par cet auteur

Investigation on sintering mechanism of nanoscale tungsten powder based on atomistic simulation / Amitava Moitra in Acta materialia, Vol. 58 N° 11 (Juin 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 3939–3951 Titre : Investigation on sintering mechanism of nanoscale tungsten powder based on atomistic simulation Type de document : texte imprimé Auteurs : Amitava Moitra, Auteur ; Sungho Kim, Auteur ; Seong-Gon Kim, Auteur Année de publication : 2011 Article en page(s) : pp. 3939–3951 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Atomistic  simulation  Nanoscale  Tungsten  Grain  boundary  misalignment  Neck  growth Résumé : Atomistic simulations focusing on sintering of crystalline tungsten powders at the submicroscopic level are performed to shed light on the processing on the nanoscale powders. The neck growth and shrinkage were calculated during these sintering simulations, making it possible to extend these results to the evolution of global physical properties that occurs during sintering. The densification and grain growth during sintering were calculated with variations in temperature, pressure, particle configuration and crystalline misalignment between particles. These findings lay the foundation for a virtual approach to setting the processing cycles and materials design applicable to nanoscale powders. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001886 [article] Investigation on sintering mechanism of nanoscale tungsten powder based on atomistic simulation [texte imprimé] / Amitava Moitra, Auteur ; Sungho Kim, Auteur ; Seong-Gon Kim, Auteur . - 2011 . - pp. 3939–3951. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 3939–3951 Mots-clés : Atomistic  simulation  Nanoscale  Tungsten  Grain  boundary  misalignment  Neck  growth Résumé : Atomistic simulations focusing on sintering of crystalline tungsten powders at the submicroscopic level are performed to shed light on the processing on the nanoscale powders. The neck growth and shrinkage were calculated during these sintering simulations, making it possible to extend these results to the evolution of global physical properties that occurs during sintering. The densification and grain growth during sintering were calculated with variations in temperature, pressure, particle configuration and crystalline misalignment between particles. These findings lay the foundation for a virtual approach to setting the processing cycles and materials design applicable to nanoscale powders. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001886