The effects of annealing on severely cold-rolled equiatomic HfNbTiZr high entropy alloy

被引：19
|
作者：
Tu, Chun-Hsiang [1 ]
Lai, Yi-Cheng [1 ]
Wu, Shyi-Kaan [1 ,2 ]
Lin, Yu-Hsien [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Dept Mech Engn, Taipei 106, Taiwan
来源：
MATERIALS LETTERS | 2021年 / 303卷
关键词：
Hall-Petch relation; High-entropy alloy; Indentation and hardness; Metals and alloy; Recrystallization; WEAR-RESISTANCE;
D O I：
10.1016/j.matlet.2021.130526
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the effects of annealing on mechanical properties and phase evolution of 80% cold-rolled equiatomic HfNbTiZr high entropy alloy (HEA) are studied. A single BCC-phase solid solution is identified in the as cold-rolled and the recrystallized state at above 700 degrees C, and its hardness increases as the annealing temperature increases. However, the HEA still follows the Hall-Petch equation according to tensile tests. When the HfNbTiZr HEA is annealed at 450 degrees C, hardness would increase, while the hardening effect on 550 degrees C annealed specimens is not so pronounced. The age hardening effect is mainly associated with the formation of HCP precipitates.
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页数：3
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