Internal tensile properties of characteristic zones in the electron beam weldment of TC17 titanium alloy

doi:10.1016/j.msea.2023.145087

IMR OpenIR

	Internal tensile properties of characteristic zones in the electron beam weldment of TC17 titanium alloy
	Xua, C.1,2; Liuc, H. Q.3; Li, C. H.2; Yanga, H. J.1,4; Shao, X. H.1,2; Ma, X. L.1,2
通讯作者	Shao, X. H.(xhshao@imr.ac.cn)
	2023-06-06
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	875 页码:9
摘要	The internal tensile deformation of the individual base metal zone (BM), heat-affected zone (HAZ), and fusion zone (FZ) in a titanium alloy (Ti-5Al-2Sn-2r-4Mo-4Cr, wt.%) electron beam welding (EBW) joint is investigated. The ultimate strength of BM with a bimodal microstructure is 1047.5 MPa, and the elongation to fracture is 9.8%. HAZ is distinguished by the formation of a ghost structure with a hierarchical cluster structure within the initial & alpha;P grains, while the embedded & alpha;s laths dissolve in the matrix and relatively coarsening & beta; grains are generated. During tension, the ghost structures strongly inhibit and deflect slip initiation and extension in the relatively coarsening & beta; matrix. The competitive balance between strengthening from the ghost structure and weakening from the coarsening matrix dominates the mechanical properties of the HAZ, which then induces a hybrid fracture. The needle-shaped thermal martensite that formed during EBW causes the FZ to fail prematurely. The microstructural evolution of HAZ and FZ decreases their mechanical properties. This research may shed some light on the mechanical enhancement of titanium alloys by utilizing the multiple & alpha;L laths precipitated within the initial & alpha;P structure associated with the bimodal matrix.
关键词	TC17 titanium alloy Electron beam welding In situ SEM Ghost structure Mechanical properties
资助者	National Natural Science Foundation of China ; Japan Society for the Promotion of Science ; Natural Science Foundation of Liaoning Province
DOI	10.1016/j.msea.2023.145087
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171021] ; National Natural Science Foundation of China[51871222] ; Japan Society for the Promotion of Science[P20737] ; Natural Science Foundation of Liaoning Province[2023-MS-018]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001039894700001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：9[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/321006/178736
专题	中国科学院金属研究所
通讯作者	Shao, X. H.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Kyushu Univ, Dept Mech Engn, Fukuoka 8190395, Japan 4.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xua, C.,Liuc, H. Q.,Li, C. H.,et al. Internal tensile properties of characteristic zones in the electron beam weldment of TC17 titanium alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,875:9.
APA	Xua, C.,Liuc, H. Q.,Li, C. H.,Yanga, H. J.,Shao, X. H.,&Ma, X. L..(2023).Internal tensile properties of characteristic zones in the electron beam weldment of TC17 titanium alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,875,9.
MLA	Xua, C.,et al."Internal tensile properties of characteristic zones in the electron beam weldment of TC17 titanium alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 875(2023):9.