Achieving a large-area bulk ultrafine-grained titanium alloy with high thermal stability via layer-by-layer multi-pass overlapping friction stir processing
文献类型：期刊论文
| 作者 | Han, M.1,2; Wu, L. H.2; Li, N.2; Xue, P.2; Ni, D. R.2; Xiao, B. L.2; Ma, Z. Y.2 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 30页码:9371-9380 |
| 关键词 | Titanium alloys Friction stir processing Microstructure Bulk ultrafine grains Thermal stability |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.06.002 |
| 通讯作者 | Wu, L. H.(lhwu@imr.ac.cn) ; Ni, D. R.(drni@imr.ac.cn) |
| 英文摘要 | It is difficult to prepare large -area bulk ultrafine-grained (UFGed) titanium alloys with uniform structure via multi -pass overlapping friction stir processing (MP-FSP) due to the low thermal conductivity and poor flow deformation ability of titanium alloys. Here, we proposed a new layer -by -layer MP-FSP method to control the defect and microstructure of the Ti-6Al-4V alloy. As a result, the as -cast coarse microstructure was changed directly to the defect -free large -area bulk UFG microstructure. The bulk UFG exhibited a uniform microstructure with average grain sizes of 0.7-0.82 mu m and over 90% of high angle grain boundaries. Moreover, the bulk UFG titanium alloy exhibited high hardness (357 HV) and great ultimate tensile strength (1177 MPa), which were much higher than those (308 HV and 739 MPa) of the base material. In addition, the bulk UFG had good thermal stability at a high temperature of 700 degrees C. Different from the bulk MP-FSP UFGed aluminium alloys where there is generally abnormal grain growth (AGG) at high temperatures, there was no AGG phenomenon in bulk MP-FSP UFGed titanium alloys even at 900 degrees C. This study provides an effective short -process method for preparing largearea bulk UFG titanium alloys with uniform structure and good thermal stability. |
| 资助项目 | Shi Changxu Innova- tion Center for Advanced Materials[SCXKFJJ202210] ; 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:001257652200001 |
| 出版者 | ELSEVIER |
| 资助机构 | Shi Changxu Innova- tion Center for Advanced Materials ; 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.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.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 | Han, M.,Wu, L. H.,Li, N.,et al. Achieving a large-area bulk ultrafine-grained titanium alloy with high thermal stability via layer-by-layer multi-pass overlapping friction stir processing[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:9371-9380. |
| APA | Han, M..,Wu, L. H..,Li, N..,Xue, P..,Ni, D. R..,...&Ma, Z. Y..(2024).Achieving a large-area bulk ultrafine-grained titanium alloy with high thermal stability via layer-by-layer multi-pass overlapping friction stir processing.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,9371-9380. |
| MLA | Han, M.,et al."Achieving a large-area bulk ultrafine-grained titanium alloy with high thermal stability via layer-by-layer multi-pass overlapping friction stir processing".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):9371-9380. |
入库方式： OAI收割
来源：金属研究所
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