| Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy | |
| Zhang, Shilin1,2; Ma, Yingjie1,2; Huang, Sensen1,3,4; Youssef, Sabry S.1,2; Qi, Min1,2; Wang, Hao1,2; Qiu, Jianke1,2; Lei, Jiafeng1,2; Yang, Rui1,2 | |
| Corresponding Author | Ma, Yingjie(yjma@imr.ac.cn) ; Lei, Jiafeng(jflei@imr.ac.cn) |
| 2019-08-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:8Pages:1681-1690 |
| Abstract | 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. |
| Keyword | Ti-6Al-4V Electron beam welding HAZ Element distribution Texture |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000470677300020 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133844 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Yingjie; Lei, Jiafeng |
| Affiliation | 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 |
| Recommended Citation 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. |
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