| Heterogeneous precipitate microstructure in titanium alloys for simultaneous improvement of strength and ductility | |
| Hao, Mengyuan1; Li, Pei1,5; Li, Xuexiong2; Zhang, Tianlong1; Wang, Dong1; Sun, Qiaoyan1; Liu, Libin3; Li, Jinshan4; Cui, Yuyou2; Yang, Rui2; Xu, Dongsheng2 | |
| Corresponding Author | Sun, Qiaoyan(qysun@mail.xjtu.edu.cn) ; Xu, Dongsheng(dsxu@imr.ac.cn) |
| 2022-10-10 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 124Pages:150-163 |
| Abstract | The design of alloys with simultaneous high strength and high ductility is still a difficult challenge. Here, we propose a new approach to designing multi-phase alloys with a synergistic combination of strength and ductility by engineering heterogeneous precipitate microstructures through the activation of different transformation mechanisms. Using a two-phase titanium alloy as an example, phase field simulations are carried out firstly to design heat treatment schedules that involve both conventional nucleation and growth and non-conventional pseudospinodal decomposition mechanisms, and the calculated microstructures have been evaluated by crystal plasticity finite element modeling. According to simulations, we then set a two-step heat treatment to produce bimodal alpha+ beta microstructure in Ti-10V-2Fe-3Al. Further mechanical testing shows that the ductility of the alloy is increased by -50% and the strength is increased by -10% as compared to its unimodal counterpart. Our work may provide a general way to improve the mechanical properties of alloys through multiscale microstructure design. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Titanium alloys Phase field simulation Crystal plasticity finite element Two-step aging Pseudospinodal decomposition mechanisms Multiscale heterogeneous microstructure |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China ; City University of Hong Kong |
| DOI | 10.1016/j.jmst.2022.02.025 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2016YFB0701302] ; National Natural Science Foundation of China[52171012] ; National Natural Science Foundation of China[51931004] ; City University of Hong Kong[7004894] ; City University of Hong Kong[9380060] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000788165000007 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172642 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sun, Qiaoyan; Xu, Dongsheng |
| Affiliation | 1.Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China 4.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 5.Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China |
| Recommended Citation GB/T 7714 | Hao, Mengyuan,Li, Pei,Li, Xuexiong,et al. Heterogeneous precipitate microstructure in titanium alloys for simultaneous improvement of strength and ductility[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,124:150-163. |
| APA | Hao, Mengyuan.,Li, Pei.,Li, Xuexiong.,Zhang, Tianlong.,Wang, Dong.,...&Xu, Dongsheng.(2022).Heterogeneous precipitate microstructure in titanium alloys for simultaneous improvement of strength and ductility.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,124,150-163. |
| MLA | Hao, Mengyuan,et al."Heterogeneous precipitate microstructure in titanium alloys for simultaneous improvement of strength and ductility".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 124(2022):150-163. |
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