Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling

doi:10.3390/ma13194332

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	Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling
	Jiang, Haiyang 1,3,4; Zhang, Jianyang 1,3; Xie, Bijun 1,3; He, Zhangxun 2; Zhang, Hao 2; Wang, Bing 1,3,4; Xu, Bin 1,3; Wu, Yuxi 1,3; Sun, Mingyue 1,3
刊名	MATERIALS
	2020-10-01
卷号	13 期号:19 页码:12
关键词	TA31 titanium alloy cylindrical shell ring rolling impact toughness anisotropy microstructure α phase orientation
DOI	10.3390/ma13194332
通讯作者	Xu, Bin(bxu@imr.ac.cn)
英文摘要	The 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.
资助项目	National 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研究方向	Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000586596300001
资助机构	National 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
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141223]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xu, Bin
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Wuhan Second Ship Design & Res Inst, Wuhan 430064, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 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.