Phase field simulation of the stress-inducedαmicrostructure in Ti–6Al–4 V alloy and its CPFEM properties evaluation

作     者：Jinhu Zhang Xuexiong Li Dongsheng Xu Chunyu Teng Hao Wang Liang Yang Hongtao Ju Haisheng Xu Zhichao Meng Yingjie Ma Yunzhi Wang Rui Yang Jinhu Zhang;Xuexiong Li;Dongsheng Xu;Chunyu Teng;Hao Wang;Liang Yang;Hongtao Ju;Haisheng Xu;Zhichao Meng;Yingjie Ma;Yunzhi Wang;Rui Yang

作者机构：Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shi-changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China China Aero-Polytechnology EstablishmentBeijing 100028China School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang 110016China Department of Materials Science and EngineeringThe Ohio State University2041 Collesnited States 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第90卷第31期

页      面：168-182页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Key Research and Development Program of China(Nos.2016YFB0701304 and 2016YFC0304200) the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDC01040100) the Special Project on Information Technology of the Chinese Academy of Sciences(No.XXH13506-304) the CAS-Shenyang Supercomputing Center and the Doctoral Scientific Research Foundation of Liaoning Province(No.20180540133) 

主　　题：Titanium alloy Phase transformation Microtexture Mechanical evaluation Phase field Crystal plasticity finite element 

摘      要：Variant selection under specific applied stresses during precipitation of a plates from prior-βmatrix in Ti-6 Al-4 V was investigated by 3 D phase field *** model incorporates the Burgers transformation path fromβto a phase,with consideration of interfacial energy anisotropy,externally applied stresses and elastic interactions among a variants andβ*** Gibbs free energy and atomic mobility data are taken from available thermodynamic and kinetic *** was found that external stresses have a profound influence on variant selection,and the selection has a sensitive dependence,as evidenced by both interaction energy calculations and phase field *** with normal stresses,shear stresses applied in certain directions were found more effective in accelerating the transformation,with a stronger preference to fewer *** volume fractions of various a variants and the final microstructure were determined by both the external stress and the elastic interaction among different *** a clusters formed by variants with Type2 misorientation([11-20]/60°)relation were found more favored than those with Type4([-1055-3]/63.26°)under certain applied tensile stress such as alongβ.The mechanical properties of different microstructures from our phase field simulation under different conditions were calculated for different loading conditions,utilizing crystal plastic finite element *** mechanical behavior of the various microstructures from phase field simulation can be evaluated well before the alloys are fabricated,and therefore it is possible to select microstructure for optimizing the mechanical properties of the alloy through thermomechanical processing based on the two types of simulations.