α" martensite engineering: A strategy to achieve high yield strength and low yield ratio synergy for dual-phase titanium alloy
文献类型：期刊论文
| 作者 | Li, Diao-Feng1,2; Bai, Chun-Guang1,2,3; Zhang, Zhi-Qiang1,2; Wang, Ran1,2; Li, Nan1,2; Yang, Rui1,2,3 |
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 239页码:15 |
| 关键词 | Titanium alloy alpha 'martensite Yield ratio Stress -induced martensite transformation Heterogeneous structure design |
| ISSN号 | 0264-1275 |
| DOI | 10.1016/j.matdes.2024.112764 |
| 通讯作者 | Bai, Chun-Guang(cgbai@imr.ac.cn) ; Li, Nan(nli@imr.ac.cn) |
| 英文摘要 | To breakthrough the long-term contradictory issue of high yield strength and low yield ratio for titanium alloys, and achieving the superior balance between these two key mechanical parameters. We have proposed an efficient "Quenching -> Cold deformation -> Recrystallization annealing" (QCR) strategy, which realizes the high yield strength (900 MPa) and low yield ratio (0.74) synergy for a model Ti6Al4V5.5Cu (wt.%) alloy which characterized with the unique multi-scale heterogeneous structure. The developed QCR processing route is based on the subtle utilization of orthorhombic alpha '' martensite, which plays the various roles in each processing step. By elaborately manipulating the recrystallization degree, chemical stability, effective domain of beta phase and alpha(t) nano-precipitates in beta phase, the stress-induced alpha '' martensite transformation (SIM alpha '') can be controlled effectively and even postponed until after yielding induced by dislocation mechanisms, thus leading to substantially improvement of yield strength. After yielding, abundant proliferation of SIM alpha '' which assisted by multi-scale alpha phases and their interactions are the fundamental reasons for achieving higher work-hardening ability, tensile strength (1215 MPa) and uniform elongation (11%). Thus, the core strategy to realize the excellent combination of high yield strength and low yield ratio is manipulating the activation sequence of the plastic deformation carriers. |
| 资助项目 | IMR Innovation Fund[2024-PY06] ; National Key Research and Development Program of China[2022YFB3708300] ; Central Government Guided Local Project of China[1666856143202] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001195302700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | IMR Innovation Fund ; National Key Research and Development Program of China ; Central Government Guided Local Project of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Bai, Chun-Guang; Li, Nan |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Diao-Feng,Bai, Chun-Guang,Zhang, Zhi-Qiang,et al. α" martensite engineering: A strategy to achieve high yield strength and low yield ratio synergy for dual-phase titanium alloy[J]. MATERIALS & DESIGN,2024,239:15. |
| APA | Li, Diao-Feng,Bai, Chun-Guang,Zhang, Zhi-Qiang,Wang, Ran,Li, Nan,&Yang, Rui.(2024).α" martensite engineering: A strategy to achieve high yield strength and low yield ratio synergy for dual-phase titanium alloy.MATERIALS & DESIGN,239,15. |
| MLA | Li, Diao-Feng,et al."α" martensite engineering: A strategy to achieve high yield strength and low yield ratio synergy for dual-phase titanium alloy".MATERIALS & DESIGN 239(2024):15. |
入库方式： OAI收割
来源：金属研究所
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