Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy

doi:10.11900/0412.1961.2018.00380

IMR OpenIR

	Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy
	Li Xuexiong 1,2; Xu Dongsheng 1; Yang Rui 1
通讯作者	Xu Dongsheng(dsxu@imr.ac.cn)
	2019-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	55 期号:7 页码:928-938
摘要	Based on the rate-dependent crystal plasticity constitutive model considering all slip systems, a series of dual-phase polycrystalline models were established using 3D Voronoi tessellation to investigate the high temperature plastic deformation of Ti-6Al-4V alloy with different microstructure features. The spatial distributions and evolution of stress and strain in various grains and phases were calculated in detail, and a new method was proposed to evaluate quantitatively the deformation consistency in the alloy with two phases. Simulations show that grain boundary region responds preferentially in the early stage of deformation. The encircling structure formed between beta and alpha grains can enhance the differences in the local strain distribution. Increasing the aspect ratio of grains and the fractions of heterogeneous phase interface can reduce the local compatibility of deformation. The stress frequency statistics of both alpha and beta phases show a double peak form, with alpha phase higher in average strain, and beta phase higher in stress distribution. Increasing of the volume fractions of a phase may reduce the tensile yield strength, and cause the stress consistency coefficient to decrease, while the strain consistency coefficient decreases first and then increases. As initial alpha-basal texture intensity increases, both tensile yield strength and stress consistency coefficient increase, while the strain consistency coefficient decreases first and then increases.
关键词	dual-phase titanium alloy Voronoi crystal plasticity finite element method (CPFEM) distribution of micro stress and strain deformation compatibility
资助者	National Key Research and Development Program of China ; Informatization Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
DOI	10.11900/0412.1961.2018.00380
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0701304] ; Informatization Program of the Chinese Academy of Sciences[XXH13506-304] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC01040100]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000471268000013
出版者	SCIENCE PRESS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/133894
专题	中国科学院金属研究所
通讯作者	Xu Dongsheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li Xuexiong,Xu Dongsheng,Yang Rui. Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy[J]. ACTA METALLURGICA SINICA,2019,55(7):928-938.
APA	Li Xuexiong,Xu Dongsheng,&Yang Rui.(2019).Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy.ACTA METALLURGICA SINICA,55(7),928-938.
MLA	Li Xuexiong,et al."Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy".ACTA METALLURGICA SINICA 55.7(2019):928-938.