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Mechanical properties of random alloys from quantum mechanical simulations
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.ORCID iD: 0000-0003-2832-3293
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
2007 (English)In: Applied Parallel Computing / [ed] Kagstrom, B; Elmroth, E; Dongarra, J; Wasniewski, J, 2007, Vol. 4699, 510-519 p.Conference paper, Published paper (Refereed)
Abstract [en]

Today, a direct determination of the mechanical properties of complex alloys from first-principles theory is not feasible. On the other hand, well established phenomenological models exist, which are suitable for an accurate description of materials behavior under various mechanical loads. These models involve a large set of atomic-level physical parameters. Unfortunately, in many cases the available parameters have unacceptably large experimental error bars. Here we demonstrate that computational modeling based on modern first-principles alloy theory can yield fundamental physical parameters with high accuracy. We illustrate this in the case of aluminum and transition metal alloys and austenitic stainless steels by computing the size and elastic misfit parameters, and the surface and stacking fault energies as functions of chemical composition.

Place, publisher, year, edition, pages
2007. Vol. 4699, 510-519 p.
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 4699
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-41140ISI: 000250904900062Scopus ID: 2-s2.0-38049045778ISBN: 978-3-540-75754-2 (print)OAI: oai:DiVA.org:kth-41140DiVA: diva2:443489
Conference
8th International Workshop on Applied Parallel Computing (PARA 2006) Location: Umea, Sweden, Date: JUN 18-21, 2006
Available from: 2011-09-26 Created: 2011-09-23 Last updated: 2011-09-26Bibliographically approved

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Vitos, Levente

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  • apa
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