Phase stability of a light-weight AlNb2TiV refractory high-entropy alloy at high temperature

被引：14
|
作者：
Zhu, X. P. [1 ]
Gao, N. [2 ]
Bai, Z. C. [2 ]
Wang, K. [3 ]
Yao, J. Q. [2 ]
Fan, Z. T. [2 ]
Wang, Z. D. [1 ]
Liu, X. W. [2 ]
机构：
[1] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[3] China Iron & Steel Res Inst Grp, Beijing 100081, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 325卷
关键词：
Low -weight refractory high -entropy alloy (LW; RHEA); Phase transformation; Phase diagrams; Decomposition; MECHANICAL-PROPERTIES; AS-CAST; AL; MICROSTRUCTURE; EQUILIBRIA; BEHAVIOR; SYSTEM;
D O I：
10.1016/j.matlet.2022.132897
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
AlNb2TiV, a newly proposed low-weight refractory high-entropy alloy (LW-RHEA), shows good mechanical properties at high temperatures. However, the thermodynamic phase stability is still not clear. Here, we evaluated the phase stability of AlNb2TiV at the temperature of 700-1100 degrees C. The LW-RHEA is decomposed into B2, A15-Nb3Al and sigma-Nb2Al phases after annealing at 1100 degrees C. Rod-like A15-Nb3Al precipitates from GBs grow along parallel orientation. Chain-like sigma-Nb2Al particles precipitate along GBs.
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页数：4
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