| Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys | |
| Ji, Yu1; Zhang, Long2,3; Lu, Xing1; Pang, Jingyu2; Lu, Yunzhuo1; Zhu, Zhengwang2,3; Fu, Huameng2,3; Zhang, Hongwei2,4; Li, Hong2,3; Zhang, Haifeng2,3 | |
| Corresponding Author | Zhang, Long(zhanglong@imr.ac.cn) ; Lu, Xing(lu@djtu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn) |
| 2022-05-06 | |
| Source Publication | ADVANCED ENGINEERING MATERIALS
 |
| ISSN | 1438-1656 |
| Pages | 9 |
| Abstract | According to the effect of valence electron concentration (VEC) on the phase evolution of high-entropy alloys (HEAs), Fe75.7-xCrxNi15.1Al4.6Ti4.6 (at%, x = 17.1, 18.9, 20.6, 22.3, and 25.3) HEAs are designed. Effects of the Cr addition on the microstructure and tensile properties are investigated systemically. As the Cr/Fe ratio increases (i.e., decreasing VEC), there is a phase transition from face-centered-cubic (FCC) to body-centered-cubic (BCC) and Heusler-type beta ' -Ni2TiAl (L2(1)). When x is between 17.1 and 22.3, the alloys, with the mixed structure of the FCC and BCC/L2(1) phases, behave like composites with a sharp increase in strength but reduced ductility. When x = 25.3, the alloy, with only BCC/L2(1) phases, becomes extremely brittle. Specifically, Fe56.8Cr18.9Ni15.1Al4.6Ti4.6 exhibits a good combination of a high strength of 1142 MPa and an elongation strain of 9.5%. The excellent tensile properties of this alloy are attributed to the synergetic effects of a soft FCC phase, a hard BCC phase, and the uniform distribution of high-density L2(1) nanoparticles in BCC matrix. The phase-evolution principle is delineated by parameters of the VEC and the atomic size difference (delta), and the strengthening mechanism is well discussed. These findings offer a guidance for the development of BCC/L2(1)-containing HEAs for practical applications. |
| Keyword | high-entropy alloys microstructural evolution strengthening mechanisms tensile properties |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science ; Dalian Science and Technology Innovation Fund ; Industrialization Innovation Team of the Industrial Technology Research Institute of the Chinese Academy of Sciences in Foshan ; Key Research Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS |
| DOI | 10.1002/adem.202200115 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2018YFB0703402] ; National Key Research and Development Program of China[2021YFA0716303] ; National Natural Science Foundation of China[52171164] ; National Natural Science Foundation of China[51790484] ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science[2019JH3/30100032] ; Dalian Science and Technology Innovation Fund[2021JJ11CG008] ; Industrialization Innovation Team of the Industrial Technology Research Institute of the Chinese Academy of Sciences in Foshan[ZK-TD-2019-04] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-3] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Youth Innovation Promotion Association CAS[2021188] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000791487300001 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172528 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Long; Lu, Xing; Zhang, Hongwei |
| Affiliation | 1.Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 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.Foshan Huizhen Technol Co Ltd, Sci & Technol Dept, Foshan 528200, Peoples R China |
| Recommended Citation GB/T 7714 | Ji, Yu,Zhang, Long,Lu, Xing,et al. Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys[J]. ADVANCED ENGINEERING MATERIALS,2022:9. |
| APA | Ji, Yu.,Zhang, Long.,Lu, Xing.,Pang, Jingyu.,Lu, Yunzhuo.,...&Zhang, Haifeng.(2022).Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys.ADVANCED ENGINEERING MATERIALS,9. |
| MLA | Ji, Yu,et al."Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys".ADVANCED ENGINEERING MATERIALS (2022):9. |
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