期刊
ACTA MATERIALIA
卷 54, 期 1, 页码 11-21出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2005.08.033
关键词
phase field model; transformation; kinetics; surface energy; impingements
A new phase field model has been developed which can simulate the austenite to ferrite (gamma -> alpha) transformation in low carbon steels at large space and time scales and involving multiple ferrite grain growth. The two-dimensional phase-field simulation shows that interface composition does not obey the local equilibrium assumption, while grain growth obeys a parabolic law for most of the transformation. The kinetics of continuous cooling transformation are successfully modelled. Results suggest that nucleation occurs both along austenite grain boundaries and within grains for high cooling rate transformations. Grain coarsening behind the transformation front is predicted. Two interesting phenomena, namely, interface acceleration, and solute enrichment behind the impingement fronts, are disclosed via this phase-field simulation. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据