Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure
文献类型：期刊论文
| 作者 | Gao, Qingwei1; Kou, Zongde2; Zhou, Changshan1; Liu, Xiaoming1; Zhang, Jiyao1; Gong, Jianhong1; Song, Kaikai1; Hu, Lina3; Liu, Zengqian4; Zhang, Zhefeng4 |
| 刊名 | MATERIALS TODAY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 81页码:70-83 |
| ISSN号 | 1369-7021 |
| DOI | 10.1016/j.mattod.2024.10.009 |
| 通讯作者 | Song, Kaikai(songkaikai8297@gmail.com) ; Hu, Lina(hulina0614@sdu.edu.cn) ; Liu, Zengqian(zengqianliu@imr.ac.cn) |
| 英文摘要 | Designing multiscale heterostructures by taking lessons from Nature provides a promising strategy for achieving excellent strength-ductility synergy in metals and alloys. The achievement of this goal usually requires intricate multi-step thermomechanical processing, but this is still a challenge with casting alloys rather than wrought ones. Here, we developed a Cr30Fe30Ni30Al5Ti5 (at.%) casting multi- principal element alloy (MPEA) which exhibits, in the as-cast condition, a hierarchically heterogeneous structure involving precipitates at multiple length scales. Microscale body-centered-cubic (BCC) grains are dispersed throughout a continuous face-centered-cubic (FCC) structural framework. Coherent L12 nanoparticles form in the FCC matrix, while abundant nanoparticles with hierarchical dimensions (i.e., of g, B2, and g/L21 phases) precipitate inside the BCC grains. The synergistic interactions between dislocations and multiscale precipitates which induce massive dislocation networks and stacking faults result in stable strain-hardening behavior, endowing the alloy with an exceptional combination of strength and ductility without the need for homogenization and complex processing. We believe that this represents a breakthrough that surpasses known casting MPEAs and offers implications for developing new high-performance casting alloys. |
| 资助项目 | Foundation of Shandong Province[ZR2023ME216] ; National Key R&D Program of China[2020YFA0710404] ; National Natural Science Foundation of China[52471152] ; Liaoning Outstanding Youth Foundation[2024JH3/50100015] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001381338700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Foundation of Shandong Province ; National Key R&D Program of China ; National Natural Science Foundation of China ; Liaoning Outstanding Youth Foundation |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Song, Kaikai; Hu, Lina; Liu, Zengqian |
| 作者单位 | 1.Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 3.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria 6.Univ Leoben, Dept Mat Sci, A-8700 Leoben, Austria 7.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Gao, Qingwei,Kou, Zongde,Zhou, Changshan,et al. Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure[J]. MATERIALS TODAY,2024,81:70-83. |
| APA | Gao, Qingwei.,Kou, Zongde.,Zhou, Changshan.,Liu, Xiaoming.,Zhang, Jiyao.,...&Ritchie, Robert O..(2024).Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure.MATERIALS TODAY,81,70-83. |
| MLA | Gao, Qingwei,et al."Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure".MATERIALS TODAY 81(2024):70-83. |
入库方式： OAI收割
来源：金属研究所
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