Phase stabilities of high entropy alloys

被引：104
作者：
Luan, Heng-Wei [1 ]
Shao, Yang [1 ]
Li, Jin-Feng [2 ]
Mao, Wen-Lue [1 ]
Han, Zhi-Dong [1 ]
Shao, Chunlin [3 ]
Yao, Ke-Fu [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
[2] China Acad Engn Phys, Inst Mat, Mianyang 621900, Sichuan, Peoples R China
[3] Peking Univ, Sch Math Sci, Beijing 100871, Peoples R China
来源：
SCRIPTA MATERIALIA | 2020年 / 179卷
基金：
中国国家自然科学基金;
关键词：
Gibbs free energy; High entropy alloys; Perturbation; Phase stability; MECHANICAL-PROPERTIES; SOLID-SOLUTION; MICROSTRUCTURE; DESIGN; PRECIPITATION; PREDICTION; BEHAVIOR; ELEMENTS;
D O I：
10.1016/j.scriptamat.2019.12.041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A perturbation model is used to evaluate the phase stabilities of high entropy alloys. The calculation results can successfully predict the phase stabilities of many high entropy alloys and shows that stable single phase high entropy alloys are rare. The effect of increased entropy cannot balance the fast-increased driving force for the formation of intermetallics. As the temperature increases, the stabilities of solid solutions will increase and the portion of single-phase alloys will expand. The model we propose provides a new paradigm to understand the phase stabilities of high entropy alloys. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：40 / 44
页数：5
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