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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Monte Carlo and molecular dynamics simulations of screw dislocation locking by Cottrell atmospheres in low carbon Fe-C alloys

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Author(s):
Veiga, R. G. A. [1] ; Goldenstein, H. [1] ; Perez, M. [2] ; Becquart, C. S. [3]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Escola Politecn, Dept Engn Met & Mat, BR-05508030 Sao Paulo, SP - Brazil
[2] Univ Lyon, UMR CNRS 5510, INSA Lyon, MATEIS, F-69621 Villeurbanne - France
[3] Ecole Natl Super Chim Lille, Unite Mat & Transformat UMET, UMR CNRS 8207, F-59655 Villeneuve Dascq - France
Total Affiliations: 3
Document type: Journal article
Source: SCRIPTA MATERIALIA; v. 108, p. 19-22, NOV 2015.
Web of Science Citations: 17
Abstract

On-lattice Monte Carlo shows strong carbon segregation at a screw dislocation in bcc iron for carbon contents that vary from 20 to 500 ppm, typical in ultra low and low carbon steels. Molecular dynamics simulations are then carried out using the atomic coordinates of equilibrated Cottrell atmospheres. The stresses required to make the screw dislocation break free of the carbon cloud are very high compared to carbon in solid solution; the locking time is also much longer. All simulations are performed at 300 K. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/10294-4 - Multiscale computational modeling of the microstructural evolution and plasticity in metallic alloys
Grantee:Roberto Gomes de Aguiar Veiga
Support type: Research Grants - Young Investigators Grants