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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Formation of carbon Cottrell atmospheres and their effect on the stress field around an edge dislocation

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Autor(es):
Waseda, Osamu ; Veiga, Roberto G. A. ; Morthomas, Julien ; Chantrenne, Patrice ; Becquart, Charlotte S. ; Ribeiro, Fabienne ; Jelea, Andrei ; Goldenstein, Helio ; Perez, Michel
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: SCRIPTA MATERIALIA; v. 129, p. 16-19, MAR 1 2017.
Citações Web of Science: 14
Resumo

Biased Metropolis Monte-Carlo is employed to build a carbon Cottrell atmosphere around an edge dislocation. A novel method involving only local minimisation during the Metropolis scheme allows to deal with a million-atom system within a reasonable computation time. In this study, it is discovered that (i) the carbon atoms occupy interstitial sites not only in the traction zone, but also in the compression zone; (ii) local carbon concentrations of approximately 10at% are in good agreement with experimental values; (iii) the saturation of the Cottrell atmosphere does not originate from the stress-field around the atmosphere but from repulsive carbon-carbon interactions only. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 14/10294-4 - Modelagem computacional multiescala da evolução microestrutural e da plasticidade em ligas metálicas
Beneficiário:Roberto Gomes de Aguiar Veiga
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores