| 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 | |
| Corresponding Author | Li, Y.(liyi@imr.ac.cn) |
| 2019-08-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 111Pages:11 |
| Abstract | 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. |
| Keyword | High entropy alloy B2 structure Amorphous Phase stability Sluggish diffusion |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| DOI | 10.1016/j.intermet.2019.106515 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFB0702003] ; National Natural Science Foundation of China[51871217] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000473374300016 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134349 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Y. |
| Affiliation | 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 |
| Recommended Citation 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. |
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