A PHENOMENOLOGICAL MEAN FIELD MODEL FOR COUPLING PHASE TRANSFORMATION WITH PLASTICITY

摘要：

The interaction between martensitic phase transformation (MPT) and plasticity is highly relevant for describing the thermomechanical behavior of maraging steels.Contrary to materials undergoing coherent phase transformations the challenge of modeling maraging steels is the generation of plastic strains through high internal stresses triggered by MPT.In dependence of different thermomechanical multiaxia! load cases the material behavior changes dramatically according to the diversity of selected martensitic variants,which influences the transformation strain as well as the induced plastic deformation.A phenomenological mean-field-model based on the P-scale transition rule has been developed for coupling MPT and TRIP.Furthermore,the evolution of the transformation surface as well as its convexity have been studied.The model predicts the material behavior for several thermomechanical multiaxial load cases very well as is demonstrated by a large experimental database.

关键词： martensitic phase transformation,plasticity,mean field model

作者: M.Fischlschweiger G.Cailletaud T.Antretter E.R.Oberaigner

作者单位: Materials Center Leoben Forschung GmbH,8700 Leoben,Centre des Materiaux,Mines ParisTech,CNRS UMR 763 Centre des Materiaux,Mines ParisTech,CNRS UMR 7633 B.P.87,Evry Cedex 91003,France Institute of Mechanics, University of Leoben,Franz-Josef-Strafie 18,8700 Leoben,Austria

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: 738-745

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）