A new strategy for composition design of eutectic high -entropy alloys based on mixing enthalpy

被引：2
作者：
Diao, Zhongheng [1 ]
Lei, Haofeng [1 ]
Ye, Xicong [1 ,2 ]
Kang, Huijun [3 ]
Zhao, Guangwei [1 ,2 ]
Li, Bo [1 ,2 ]
Fang, Dong [1 ,2 ]
机构：
[1] China Three Gorges Univ, Coll Mech & Power Engn, Yichang 443002, Peoples R China
[2] China Three Gorges Univ, Hubei Engn Res Ctr Graphite Addit Mfg Technol & Eq, Yichang 443002, Peoples R China
[3] Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China
来源：
INTERMETALLICS | 2024年 / 174卷
关键词：
Eutectic high-entropy alloys; Design; Microstructure; Mixing enthalpy; MECHANICAL-PROPERTIES; SOLID-SOLUTION; MICROSTRUCTURE; STABILITY; CORROSION; STRENGTH; BEHAVIOR; PHASE;
D O I：
10.1016/j.intermet.2024.108451
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Eutectic high - entropy alloys (EHEAs) effectively strike a delicate balance between strength and ductility in metallic materials by creating heterogeneous biphasic layered structures on the micron and nanometer scales. However, designing EHEAs remains a difficult challenging. In this work, a method is proposed to design EHEAs based on the redistribution of mixing enthalpy and binary eutectic compositions. Four new types of non-equal molar ratio EHEAs have been successfully designed. Namely Co27.6Cr7.89Fe18.34Ni32.5Nb13.67, Co29.44Cr8.1Fe18.5Ni29.96Ta14, Cr11.62Fe27Ni47.38Nb14, and Cr11.93Fe27.2Ni47.37Ta13.5. The microstructure of four EHEAs consists of FCC phase and Laves phase. The experimental results show that it is possible to design EHEAs with excellent performance using the new strategy.
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页数：8
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