Phase stability of B2-ordered ZrTiHfCuNiFe high entropy alloy

doi:10.1016/j.intermet.2019.106515

IMR OpenIR

	Phase stability of B2-ordered ZrTiHfCuNiFe high entropy alloy
	Meng, Y. H.1,2; Duan, F. H.1,3; Pan, J.1,2; Li, Y.1,2
通讯作者	Li, Y.(liyi@imr.ac.cn)
	2019-08-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	111 页码:11
摘要	In the present study, bulk equiatomic ZrTiHfCuNiFe HEA rod possessing single B2 phase was successfully synthesized by the copper mold casting. The phase stability of B2-ordered ZrTiHfCuNiFe HEA was systematically investigated in comparison with that of the amorphous phase of the same composition. The characterization of their microstructure and phase evolution after long-term annealing up to 1000 hat temperatures ranging from 500 degrees C to 850 degrees C were analyzed. Annealed at 750-850 degrees C, the HEA casting rod and amorphous ribbon exhibit the same predominant B2 phase and a small amount of second phase at the grain boundaries. While annealed at 600 degrees C and below even for prolonged annealing time 1000 h, no phase transformation is observed in the HEA casting rod with B2 phase, whereas multiple phases (i.e. (Cu,Ni)(10)(Zr,Hf)(7), ordered HCP, B2 and FeTi) are formed in the amorphous ribbon. The B2 phase obtained by annealing amorphous ribbon at high temperature does remain its B2 structure when annealed at 600 degrees C again. These observations clearly indicate that B2 phase in the ZrTiHfCuNiFe HEA exhibits higher thermal stability at 600 degrees C and below compared with the amorphous phase of the same composition, which may be attributed to the low phase transformation temperature and coordinated long-range sluggish diffusion. The present work provides a new insight into understanding the phase stability of HEA intermetallic compound.
关键词	High entropy alloy B2 structure Amorphous Phase stability Sluggish diffusion
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1016/j.intermet.2019.106515
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0702003] ; National Natural Science Foundation of China[51871217]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000473374300016
出版者	ELSEVIER SCI LTD
引用统计	被引频次：35[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/321006/134344
专题	中国科学院金属研究所
通讯作者	Li, Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuguan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Meng, Y. H.,Duan, F. H.,Pan, J.,et al. Phase stability of B2-ordered ZrTiHfCuNiFe high entropy alloy[J]. INTERMETALLICS,2019,111:11.
APA	Meng, Y. H.,Duan, F. H.,Pan, J.,&Li, Y..(2019).Phase stability of B2-ordered ZrTiHfCuNiFe high entropy alloy.INTERMETALLICS,111,11.
MLA	Meng, Y. H.,et al."Phase stability of B2-ordered ZrTiHfCuNiFe high entropy alloy".INTERMETALLICS 111(2019):11.