A new quantitative relation between deformation textures and corresponding mechanical properties of FCC metals  

作　　者：Hongwei Li Shanshan Chen He Yang 

机构地区：[1]State Key Laboratory of Solidification Processing,Northwestern Polytechnical University

出　　处：《Chinese Science Bulletin》2014年第10期1049-1056,共8页

基　　金：supported by the National Natural Science Foundation of China(51175428);the National Basic Research Program of China(2011CB012802);the 111 Project(B08040)

摘　　要：Quantitative analysis of deformation-induced textures and texture-induced mechanical properties is an important issue for optimal design and control of plastic forming of metals.Deformation-induced textures were predicted through the crystal plasticity finite-element method(CPFEM)in this study,and varying deformation modes,including uniaxial compression,uniaxial tension,simple shear,and plane-strain compression,were considered.The predicted textures were proven by experiments.Then,a theoretical model was proposed to build the quantitative relation between textures and the corresponding mechanical properties.This model takes into account the effects of grain’s orientation,grain’s interaction,and the property in the level of single grain.It captures the macroscopic anisotropy owing to textures and microscopic anisotropy owing to crystallographic structures.By applying this model,the macroscopic stress responses of grains’aggregate with varying textures were calculated according to grain’s orientations and the intrinsic properties of the single crystal along[100]and[111]crystallographic directions.The theoretical model is proven to have high efficiency and acceptable accuracy in the prediction of texture-induced mechanical properties comparing with CPFEM model.Quantitative analysis of deformation-inducedtextures and texture-induced mechanical properties is animportant issue for optimal design and control of plasticforming of metals. Deformation-induced textures werepredicted through the crystal plasticity finite-elementmethod （CPFEM） in this study, and varying deformationmodes, including uniaxial compression, uniaxial tension,simple shear, and plane-strain compression, were consid-ered. The predicted textures were proven by experiments.Then, a theoretical model was proposed to build thequantitative relation between textures and the correspond-ing mechanical properties. This model takes into accountthe effects of grain＇s orientation, grain＇s interaction, andthe property in the level of single grain. It captures themacroscopic anisotropy owing to textures and microscopicanisotropy owing to crystallographic structures. By apply-ing this model, the macroscopic stress responses of grains＇aggregate with varying textures were calculated accordingto grain＇s orientations and the intrinsic properties of thesingle crystal along [100] and [111] crystallographicdirections. The theoretical model is proven to have highefficiency and acceptable accuracy in the prediction oftexture-induced mechanical properties comparing withCPFEM model.

关 键 词：QUANTITATIVE RELATION Deformationtexture MECHANICAL property Crystal PLASTICITY ANISOTROPY 

分 类 号：TG113[金属学及工艺—物理冶金]