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Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys

文献类型：期刊论文

作者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
刊名ADVANCED ENGINEERING MATERIALS
出版日期2022-05-06
页码9
ISSN号1438-1656
关键词high-entropy alloys microstructural evolution strengthening mechanisms tensile properties
DOI10.1002/adem.202200115
通讯作者Zhang, Long(zhanglong@imr.ac.cn) ; Lu, Xing(lu@djtu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
英文摘要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.
资助项目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研究方向Materials Science
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000791487300001
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/172527]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Long; Lu, Xing; Zhang, Hongwei
作者单位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
推荐引用方式
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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来源：金属研究所

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