QUANTITATIVE PHASE-FIELD MODELING OFTHE FERRITE-TO-AUSTENITE TRANSFORMATION

摘要：

A quantitative phase-field model is developed to simulate the ferrite-to-austenite phase transformation.The proposed model can be reduced to the mixed-mode model for solid-solid phase transition in a sharp-interface limit or thin-interface limit.The matched asymptotic expansion for the phasefield equations is performed at the second order with a small parameter.An anti-trapping current,suitable for two-sided diffusion,is introduced in.the solute conservation equation to eliminate anomalous interface stretching and surface diffusion effects due to unequal diffusivities in both phases.Thus,the local equilibrium at the interface can be recovered.Data for model validation is presented.

关键词： quantitative phase-field model anti-trapping current ferrite-to-austenite transformation

作者: S.Y.Pan M.F.Zhu B.W.Krakauer

作者单位: Jiangsu Key Laboratory for Advanced Metallic Materials,School of Materials Science and Engineering,S AO Smith Corporate Technology Center,Milwaukee,Wl,53224 USA

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 230-233

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）