Superplastic deformation behavior of lamellar microstructure in a hydrogenated friction stir welded Ti-6Al-4V joint
文献类型：期刊论文
| 作者 | Wu, L. H.1; Jia, C. L.1; Han, S. C.1; Li, N.1; Ni, D. R.1; Xiao, B. L.1; Ma, Z. Y.1; Fu, M. J.2; Wang, Y. Q.2; Zeng, Y. S.2 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2019-05-30 |
| 卷号 | 787页码:1320-1326 |
| 关键词 | Ti alloys Friction stir welding Superplasticity Hydrogenation Globularization |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2019.02.182 |
| 通讯作者 | Ma, Z. Y.(zyma@imr.ac.cn) ; Zeng, Y. S.(yszeng@hotmail.com) |
| 英文摘要 | It is rather difficult for Ti alloy welds to be superplastic formed due to their low superplasticity and high flow stress. In this study, the Ti-6Al-4V alloy after hydrogenation with 0.2 wt% hydrogen was subjected to friction stir welding (FSW). The superplastic behavior of the FSW joint was investigated. The stir zone with a fine lamellar microstructure exhibited a largest elongation of 660% at 825 degrees C and 3 x 10(-3) s(-1). Besides, the stir zone showed a similar superplasticity of close to 600% to the base material at 825 degrees C, 3 x 10(-4) -1 x 10(-3) s(-1). It is the first report on the superplasticity of FSW Ti alloy joints with hydrogenation. Compared to the FSW Ti-6Al-4V alloy joint without hydrogenation, the hydrogenated FSW joint showed superior superplastic properties, including a high elongation, less than a half flow stress and lower superplastic temperature. These superior superplastic properties were mainly attributed to the globularization of the lamellar microstructure and the high fraction of beta phase induced by the hydrogen element. This study provides an effective way to reduce the difficulty of practical superplastic forming for Ti alloy welds, although a dehydrogenation process is still needed to avoid hydrogen embrittlement. (C) 2019 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[51601194] ; National Natural Science Foundation of China[51471171] ; National Natural Science Foundation of China[51331008] ; IMR SYNL-T.S. Ke Research Fellowship |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000462592500150 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; IMR SYNL-T.S. Ke Research Fellowship |
| 源URL | [http://ir.imr.ac.cn/handle/321006/132693]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma, Z. Y.; Zeng, Y. S. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Avic Mfg Technol Inst, 1 Dongjunzhuang Rd, Beijing 100024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, L. H.,Jia, C. L.,Han, S. C.,et al. Superplastic deformation behavior of lamellar microstructure in a hydrogenated friction stir welded Ti-6Al-4V joint[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,787:1320-1326. |
| APA | Wu, L. H..,Jia, C. L..,Han, S. C..,Li, N..,Ni, D. R..,...&Zeng, Y. S..(2019).Superplastic deformation behavior of lamellar microstructure in a hydrogenated friction stir welded Ti-6Al-4V joint.JOURNAL OF ALLOYS AND COMPOUNDS,787,1320-1326. |
| MLA | Wu, L. H.,et al."Superplastic deformation behavior of lamellar microstructure in a hydrogenated friction stir welded Ti-6Al-4V joint".JOURNAL OF ALLOYS AND COMPOUNDS 787(2019):1320-1326. |
入库方式： OAI收割
来源：金属研究所
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