The hardening of iron–chromium alloys under thermal ageing: An atomistic study

Research output: Contribution to journalArticle

Institutes & Expert groups

Documents & links

Abstract

In this work an atomistic multi-scale modelling approach is applied to study: (i) the kinetics of phase separation during thermal ageing of binary Fe–Cr alloys and (ii) the interaction of dislocations with Cr-rich precipitates. The studies were performed varying the Cr content in the range of 12–18 at.% Cr and at temperatures from 600 to 900 K, which is within the miscibility gap where phase separation occurs. Thermal ageing was simulated using atomistic kinetic Monte Carlo techniques while the interaction of a dislocation with Cr-rich precipitates was studied by molecular dynamics. In both cases the description of atomic interactions was provided by the same semi-empirical interatomic potential, partially fitted to available ab initio data. Both studies are combined to analyse the hardening of Fe–Cr alloys during thermal ageing.

Details

Original languageEnglish
Pages (from-to)278-283
JournalJournal of Nuclear Materials
Volume385
Issue number2
DOIs
Publication statusPublished - 31 Mar 2009
EventE-MRS 2008 Spring Meeting - Strasbourg, France
Duration: 26 May 200830 May 2008

Keywords

  • Atomistic simulations, Fe-Cr, Precipitation, Hardening, Thermal ageing

ID: 369795