Theoretical evaluation of solid solution interaction in Fex(CoCrMnNi)100-x medium- and high-entropy alloys

被引：29
作者：
Agustianingrum, Maya Putri [1 ]
Ondicho, Ibrahim [1 ]
Jodi, Dennis Edgard [1 ]
Park, Nokeun [1 ,2 ]
Lee, Unhae [3 ]
机构：
[1] Yeungnam Univ, Sch Mat Sci & Engn, 280 Daehak Ro, Gyongsan 38541, Gyeongbuk, South Korea
[2] Yeungnam Univ, Inst Mat Technol, 280 Daehak Ro, Gyongsan 38541, Gyeongbuk, South Korea
[3] POSCO Tech Res Labs, Gwangyang 57807, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 759卷
关键词：
Modeling; Material design; Iron alloys; Multicomponent alloys; Solid solution interaction; MECHANICAL-PROPERTIES; DEFORMATION;
D O I：
10.1016/j.msea.2019.05.082
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Solid solution interaction in medium- and high-entropy of Fe-x(CoCrMriNi)(100-x) (x = 20, 40, 50, and 60 at. %) alloys was evaluated theoretically. The different Fe contents were found to affect the yield strength (sigma(y)) of the Fe-x(CoCrMnNi)(100-x) system, with higher Fe content leading to reduced sigma(y). The focus of this study was to investigate, using various theoretical approaches, the effect of different Fe contents on the solid solution interaction in the Fe-x(CoCrMnNi)(100-x), system. The theoretical approaches demonstrated a decreasing atomic size misfit with increasing Fe content, which reduced lattice distortion. The critical resolved shear stress for slip to occur also decreased with increasing Fe content, leading to the least solid solution contribution with higher Fe content in the Fe-x(CoCrMnNi)(100-x) system. The solid solution interaction of the Fe-x(CoCrMnNi)(100-x) system at lower temperature was also observed, showing good agreement with the reresults obtained at room temperature.
引用
收藏
页码：633 / 639
页数：7
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