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

doi:10.1002/adem.202200115

IMR OpenIR

	Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7-xCrxNi15.1Al4.6Ti4.6 High-Entropy Alloys
	Ji, Yu 1; Zhang, Long 2,3; Lu, Xing 1; Pang, Jingyu 2; Lu, Yunzhuo 1; Zhu, Zhengwang 2,3; Fu, Huameng 2,3; Zhang, Hongwei 2,4; Li, Hong 2,3; Zhang, Haifeng 2,3
通讯作者	Zhang, Long(zhanglong@imr.ac.cn) ; Lu, Xing(lu@djtu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
	2022-05-06
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	9
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.
关键词	high-entropy alloys microstructural evolution strengthening mechanisms tensile properties
资助者	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
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000791487300001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172528
专题	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.