The effect of Ti/Al ratios on the evolution of precipitates and their effects on tensile properties for Fe3.75Cr1.25NiAl0.6-xTix high entropy alloys
文献类型：期刊论文
| 作者 | Ji, Yu1; Zhang, Hongwei1; Pang, Jingyu1; Xing, Zhenqiang1; Zhang, Long1; Zhu, Zhengwang2; Wang, Aimin1; Zhang, Haifeng2 |
| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 175页码:9 |
| 关键词 | HEAs Microstructure evolution and tensile properties B2 and L2(1) nanoparticles |
| ISSN号 | 0966-9795 |
| DOI | 10.1016/j.intermet.2024.108505 |
| 通讯作者 | Zhang, Hongwei(hongweizhang@imr.ac.cn) ; Pang, Jingyu(jypang17s@imr.ac.cn) ; Wang, Aimin(amwang@imr.ac.cn) |
| 英文摘要 | The work developed a series of novel Co-free high-entropy alloys (HEAs), i.e. Fe3.75Cr1.25NiAl0.6-xTix (x = 0, 0.15, 0.30 and 0.40, molar ratio) HEAs abbreviated as Ti0, Ti0.15, Ti0.30 and Ti0.40, respectively. The effects of Ti/Al ratio (Al partially replaced by Ti) on the microstructure and tensile properties were investigated systematically. The Ti0 HEA contains the FCC phase in dendritic regions and the BCC and B2 phases (BCC/B2) in interdendritic regions. Moreover, the spherical ordered B2 nanoparticles are embedded in the BCC matrix. With increasing the Ti/Al ratio from 0 to 1/3, there is a phase transition from B2-NiAl to L2(1)-Ni2AlTi. Furthermore, the morphology of the nanoparticles evolves from spherical to cuboidal. With further increasing the Ti/Al ratio from 1/3 to 1 and 2, the morphology of nanoparticles evolves from cuboidal back to spherical. In addition, the Ti0.40 HEA has sigma phases besides FCC, BCC, and L2(1) phases. The analysis of tensile properties shows that properly adjusting Ti/Al ratios sharply improves the plasticity and slightly improves the ultimate strength, but only causes a limited decrease in the yield strength. Specifically, the Ti0.15 HEA has a superior combination of strength and plasticity, exhibiting a yield strength of 819 MPa, an ultimate strength of 1113 MPa, and a fracture strain of 13.4 %. The SRO, the solid-solution strengthening, the phase transformation, and the shape of nanoparticles were discussed in detail, which reveals the origins of the excellent tensile properties. In addition, the excessive addition of Ti forms the sigma phase, leading to a serious brittleness. These findings are believed to promote the development of low-cost HEAs with BCC/L21 for practical applications. |
| 资助项目 | Liaoning Key Research and Development Program, China[2022JH2/101300080] ; Chinese Academy of Sciences, China[ZDBS-LY-JSC023] ; Natural Science Foundation of Liaoning Province, China[2023-BS-012] ; Youth Innovation Promotion Association CAS, China[2021188] ; IMR Innovation Fund, China[2023-PY16] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001320606700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Liaoning Key Research and Development Program, China ; Chinese Academy of Sciences, China ; Natural Science Foundation of Liaoning Province, China ; Youth Innovation Promotion Association CAS, China ; IMR Innovation Fund, China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Hongwei; Pang, Jingyu; Wang, Aimin |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ji, Yu,Zhang, Hongwei,Pang, Jingyu,et al. The effect of Ti/Al ratios on the evolution of precipitates and their effects on tensile properties for Fe3.75Cr1.25NiAl0.6-xTix high entropy alloys[J]. INTERMETALLICS,2024,175:9. |
| APA | Ji, Yu.,Zhang, Hongwei.,Pang, Jingyu.,Xing, Zhenqiang.,Zhang, Long.,...&Zhang, Haifeng.(2024).The effect of Ti/Al ratios on the evolution of precipitates and their effects on tensile properties for Fe3.75Cr1.25NiAl0.6-xTix high entropy alloys.INTERMETALLICS,175,9. |
| MLA | Ji, Yu,et al."The effect of Ti/Al ratios on the evolution of precipitates and their effects on tensile properties for Fe3.75Cr1.25NiAl0.6-xTix high entropy alloys".INTERMETALLICS 175(2024):9. |
入库方式： OAI收割
来源：金属研究所
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