Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases
文献类型：期刊论文
| 作者 | Chen, Jingqian1,2,3; Zhou, Yongkang1,2,3; Yu, Lili4; Zeng, Shuai1,2,3; Wang, Aiming1,3; Fu, Huameng1,3; Zhang, Hongwei1,3; Zhang, Haifeng1,3,5; Zhu, Zhengwang1,3,5 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 913页码:11 |
| 关键词 | High entropy alloys (HEAs) Sigma phase Strength-ductility Mechanical properties Strengthening mechanisms Deformation behavior |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2024.147062 |
| 通讯作者 | Zhu, Zhengwang(zwzhu@imr.ac.cn) |
| 英文摘要 | The sigma phase is a well-known harmful phase in transition metal alloys, leading to severe embrittlement due to its inherent brittleness. However, in this work, we develop a new strategy to obtain enhanced strength-ductility combination via the synergistic effects of interlocking co-precipitation of the sigma and L21 1 phases in Fe40Ni30Cr20Al5Ti5 40 Ni 30 Cr 20 Al 5 Ti 5 (at. %) high-entropy alloy (HEA). This HEA exhibits a good strength-ductility combination after aging treatment (800 degrees C for 4h), with a yield strength (YS) of about 920 MPa and an ultimate tensile strength (UTS) of about 1300 MPa while maintaining a total elongation (TE) of 24 %. It is attributed to the interlocking co-precipitation of the sigma and L21 1 phases with equal volume fractions into the face-centered cubic (FCC) matrix through thermomechanical treatment. During the tensile deformation, the softer L21 1 phase coordinates the deformation around the sigma phase, suppresses the local stress concentration, and achieves a stable high work hardening capability, as well as stacking faults (SFs) networks and density Lomer-Cottrell (L-C) locks, contributes to the excellent strain hardening capacity and thus obtains the enhanced strength-ductility combination in the HEA. This study will provide a new strategy to obtain enhanced strength-ductility combination for alloys containing brittle and hard topologically close-packed (TCP) phases, such as the sigma phases. |
| 资助项目 | National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LY- JSC023] ; Fundamental Research Funds for the Central Universities[N2325008] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001293301400001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhu, Zhengwang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Qingdao Qingte Zhongli Automobile Axle Co Ltd, Qingdao 266000, Peoples R China 5.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jingqian,Zhou, Yongkang,Yu, Lili,et al. Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,913:11. |
| APA | Chen, Jingqian.,Zhou, Yongkang.,Yu, Lili.,Zeng, Shuai.,Wang, Aiming.,...&Zhu, Zhengwang.(2024).Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,913,11. |
| MLA | Chen, Jingqian,et al."Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 913(2024):11. |
入库方式： OAI收割
来源：金属研究所
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