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Crystal Plasticity Finite Element Method Investigation of the High Temperature Deformation Consistency in Dual-Phase Titanium Alloy
Li Xuexiong1,2; Xu Dongsheng1; Yang Rui1
Corresponding AuthorXu Dongsheng(dsxu@imr.ac.cn)
2019-07-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume55Issue:7Pages:928-938
AbstractBased 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.
Keyworddual-phase titanium alloy Voronoi crystal plasticity finite element method (CPFEM) distribution of micro stress and strain deformation compatibility
Funding OrganizationNational 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
DOI10.11900/0412.1961.2018.00380
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000471268000013
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/133894
Collection中国科学院金属研究所
Corresponding AuthorXu Dongsheng
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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