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Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling
Jiang, Haiyang1,2,3; Zhang, Jianyang1,3; Xie, Bijun1,3; He, Zhangxun4; Zhang, Hao4; Wang, Bing1,2,3; Xu, Bin1,3; Wu, Yuxi1,3; Sun, Mingyue1,3
Corresponding AuthorXu, Bin(bxu@imr.ac.cn)
2020-10-01
Source PublicationMATERIALS
Volume13Issue:19Pages:12
AbstractThe impact toughness of a TA31 titanium alloy cylindrical shell was investigated systemically after ring rolling. The impact toughness of specimens with different notch orientations shows obvious anisotropy. The microstructure of the cylindrical shell and the impact fracture were characterized by an optical microscope and scanning electron microscope. The results show that cracks are easier to propagate in the equiaxed alpha phase than the elongated alpha phase. This is because the expanding cracking path in the equiaxed alpha phase is shorter than that in the elongated alpha phase, and thereby the cracks are easier to propagate in the equiaxed alpha phase than the elongated alpha phase. More specifically, the alpha phase on the RD-TD plane was obviously isotropic, which makes it easy for the cracks to propagate along alpha grains in the same direction. However, the alpha phase on the RD-ND plane has a layered characteristic, and the direction of the alpha phase varies from layer to layer, thus it requires higher energy for cracks to propagate across this layered alpha phase. Therefore, the cracks propagating in the same alpha phase orientation take easier than that in the layered alpha phase, so it has lower impact toughness.
KeywordTA31 titanium alloy cylindrical shell ring rolling impact toughness anisotropy microstructure α phase orientation
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
DOI10.3390/ma13194332
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program[2018YFA0702900] ; National Natural Science Foundation of China[51774265] ; National Science and Technology Major Project of China[2019ZX06004010] ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000586596300001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141224
Collection中国科学院金属研究所
Corresponding AuthorXu, Bin
Affiliation1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Wuhan Second Ship Design & Res Inst, Wuhan 430064, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Haiyang,Zhang, Jianyang,Xie, Bijun,et al. Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling[J]. MATERIALS,2020,13(19):12.
APA Jiang, Haiyang.,Zhang, Jianyang.,Xie, Bijun.,He, Zhangxun.,Zhang, Hao.,...&Sun, Mingyue.(2020).Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling.MATERIALS,13(19),12.
MLA Jiang, Haiyang,et al."Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling".MATERIALS 13.19(2020):12.
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