Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy

doi:10.1016/j.jmst.2019.04.004

IMR OpenIR

	Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy
	Zhang, Shilin 1,2; Ma, Yingjie 1,2; Huang, Sensen 1,3,4; Youssef, Sabry S.1,2; Qi, Min 1,2; Wang, Hao 1,2; Qiu, Jianke 1,2; Lei, Jiafeng 1,2; Yang, Rui 1,2
通讯作者	Ma, Yingjie(yjma@imr.ac.cn) ; Lei, Jiafeng(jflei@imr.ac.cn)
	2019-08-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:8 页码:1681-1690
摘要	The heat-affected zone (HAZ) of electron beam welded (EBW) joint normally undergoes a unique heat-treating process consisting of rapid temperature rising and dropping stages, resulting in temperature-gradient in HAZ as a function of the distance to fusion zone (FZ). In the current work, microstructure, elements distribution and crystallographic orientation of three parts (near base material (BM) zone, mid-HAZ and near-FZ) in the HAZ of Ti-6Al-4V alloy were systematically investigated. The microstructure observation revealed that the microstructural variation from near-BM to near-FZ included the reduction of primary alpha (alpha(p)) grains, the increase of transformed beta structure (beta(t)) and the formation of various a structures. The rim-alpha, dendritic a and abnormal secondary alpha (alpha(s)) colonies formed in the mid-HAZ, while the "ghost" structures grew in the near-FZ respectively. The electron probe microanalyzer (EPMA) and electron back-scattered diffraction (EBSD) technologies were employed to evaluate the elements diffusion and texture evolution during the unique thermal process of welding. The formation of the various a structures in the HAZ were discussed based on the EPMA and EBSD results. Finally, the nanoindentation hardness of "ghost" structures was presented and compared with nearby beta(t) regions. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Ti-6Al-4V Electron beam welding HAZ Element distribution Texture
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Key Research and Development Program of China ; Natural Science Foundation of China
DOI	10.1016/j.jmst.2019.04.004
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB06050100] ; Natural Key Research and Development Program of China[2016YFC0304201] ; Natural Key Research and Development Program of China[2016YFC0304206] ; Natural Science Foundation of China[51871225]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000470677300020
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：53[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/321006/133844
专题	中国科学院金属研究所
通讯作者	Ma, Yingjie; Lei, Jiafeng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Northeastern Univ, Sch Mat & Engn, Shenyang 110819, Liaoning, Peoples R China 4.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shilin,Ma, Yingjie,Huang, Sensen,et al. Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(8):1681-1690.
APA	Zhang, Shilin.,Ma, Yingjie.,Huang, Sensen.,Youssef, Sabry S..,Qi, Min.,...&Yang, Rui.(2019).Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(8),1681-1690.
MLA	Zhang, Shilin,et al."Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.8(2019):1681-1690.