| Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping | |
| Fu,Yu1; Xiao,Wenlong1,2; Zhao,Shiteng1; Ren L(任磊)1,3; Wang,Junshuai1; Rong,Jian1; Li,Juan4; Zhao,Xinqing1; Ma,Chaoli1,2 | |
| 通讯作者 | Xiao, Wenlong(wlxiao@buaa.edu.cn) |
| 发表期刊 | SCRIPTA MATERIALIA
 |
| 2023-03-15 | |
| 卷号 | 226页码:7 |
| ISSN | 1359-6462 |
| 摘要 | As one of the detrimental ingredients, oxygen can, even in a small amount, substantially reduce the ductility of Ti alloys. Here, rather than being discouraged by the negative effects of oxygen on ductility, an equiaxed dual-phase Ti-8Nb-2Fe-0.66O (wt.%) alloy showing ultrahigh yield strength (1386 MPa) and good tensile ductility (fracture elongation similar to 10.8%) was developed. The oxygen-containing alloy is 87% stronger than the oxygen-free base alloy whereas the ductility loss is marginal. The effects of oxygen interstitials can be twofold: they led to significant solid-solution strengthening by pinning dislocations and suppressing stress-induced martensitic transformation; the equiaxed alpha + beta dual-phase with basal alpha texture doped by oxygen promoted multiple < c + a >-type and < a >-type dislocation activities that guaranteed good ductility. This work demonstrates a new avenue to develop high-strength Ti alloys by doping oxygen interstitials, which takes full advantage of the beneficial strengthening factor of oxygen while avoiding its detrimental embrittlement effect. |
| 关键词 | Titanium alloy Equiaxed microstructure Interstitial oxygen High strength Deformation mechanisms |
| DOI | 10.1016/j.scriptamat.2022.115236 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000902172200003 |
| 关键词[WOS] | DUCTILITY ; MICROSTRUCTURE ; TEMPERATURE ; MECHANISM ; BEHAVIOR |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 资助项目 | National Natural Science Foundation of China ; Youth Talent Support Program of Beihang University ; China Aviation Devel- opment Independent Innovation Special Fund Project ; [51671012] ; [52001018] ; [CXPT- 2020-033] |
| 项目资助者 | National Natural Science Foundation of China ; Youth Talent Support Program of Beihang University ; China Aviation Devel- opment Independent Innovation Special Fund Project |
| 论文分区 | 一类 |
| 力学所作者排名 | 3+ |
| RpAuthor | Xiao, Wenlong |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/91318 |
| 专题 | 流固耦合系统力学重点实验室 |
| 作者单位 | 1.Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Adv Mat & Performance, Minist Educ, Beijing 100191, Peoples R China; 2.Beihang Univ, Yunnan Innovat Inst, Kunming 650000, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 4.AECC Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu,Yu,Xiao,Wenlong,Zhao,Shiteng,et al. Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping[J]. SCRIPTA MATERIALIA,2023,226:7. |
| APA | Fu,Yu.,Xiao,Wenlong.,Zhao,Shiteng.,任磊.,Wang,Junshuai.,...&Ma,Chaoli.(2023).Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping.SCRIPTA MATERIALIA,226,7. |
| MLA | Fu,Yu,et al."Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping".SCRIPTA MATERIALIA 226(2023):7. |
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| Jp2023Fa259.pdf（12107KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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