Microstructure and mechanical properties in electron beam scanning welded joints of super thick titanium alloy plates
文献类型：期刊论文
| 作者 | Yang, F.1,2; Wu, L. H.1,2; Zhao, H. B.1; Li, N.1; Xue, P.1,2; Ni, D. R.1,2; Ma, Z. Y.1,2 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 32页码:2459-2473 |
| 关键词 | Titanium alloys Electron beam welding Microstructure Mechanical properties Impact deformation |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.08.077 |
| 通讯作者 | Wu, L. H.(lhwu@imr.ac.cn) ; Ni, D. R.(drni@imr.ac.cn) |
| 英文摘要 | It is generally difficult to obtain good weld formation and excellent properties in super thick titanium alloy joints via conventional electron beam welding (EBW) methods due to the fact that the melt pool flow becomes more unstable as the plate thickness increases. In this study, electron beam scanning welding (EBSW) was utilized to weld 100 mm Ti-6Al-3Nb-3Zr-1Mo titanium alloy plates to improve the weld formation and impact toughness through the scanning effect. The results revealed that there were spatter and cutting defects on the surface and inner pore defect in the normal EBW joint, which could be effectively eliminated via EBSW. The decrease of the amplitude of the fluid flow rate and the change of the velocity direction were mainly responsible for this. A large amount of lamellar alpha phase with similar orientation was formed in the fusion zone (FZ) due to the fast cooling rate. The joint coefficient for both EBSW and EBW reached 100%, with the joint tensile strength of similar to 840 MPa. The impact energy of the FZ in the EBSW joint was 70.5 J, reaching 210.4% of that of the BM (33.5 J). The impact toughness increase ratio in this study was far larger than those for Ti alloy welds ever reported, which was mainly attributed to that the high angle alpha colony boundaries with high preferred orientation in the FZ deflected the crack propagation direction. This study provides a reference for the strength-toughness design of EBWed joints of super thick Ti6331 titanium alloy. |
| 资助项目 | National Key Research and Devel-opment Program of China[2023YFC2810700] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021193] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[Y2021061] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001301437400001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Devel-opment Program of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, L. H.; Ni, D. R. |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, F.,Wu, L. H.,Zhao, H. B.,et al. Microstructure and mechanical properties in electron beam scanning welded joints of super thick titanium alloy plates[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,32:2459-2473. |
| APA | Yang, F..,Wu, L. H..,Zhao, H. B..,Li, N..,Xue, P..,...&Ma, Z. Y..(2024).Microstructure and mechanical properties in electron beam scanning welded joints of super thick titanium alloy plates.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,32,2459-2473. |
| MLA | Yang, F.,et al."Microstructure and mechanical properties in electron beam scanning welded joints of super thick titanium alloy plates".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 32(2024):2459-2473. |
入库方式： OAI收割
来源：金属研究所
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