Role of Various Parameters in the Formation of the Physicomechanical Properties of High-Entropy Alloys with BCC Lattices

被引：8
|
作者：
Gorban, V. F. [1 ]
Krapivka, N. A. [1 ]
Firstov, S. A. [1 ]
Kurilenko, D. V. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, UA-03680 Kiev, Ukraine
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2018年 / 119卷 / 05期
关键词：
high-entropy alloys; size mismatch; enthalpy of mixing; lattice parameter; modulus of elasticity; DEFORMATION;
D O I：
10.1134/S0031918X18050046
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
An analysis of simple structures of the solid-solution non-ordered high-entropy alloys (HEAs) with a bcc crystal lattice has allowed us to determine the effect of various parameters on their physicomechanical properties. It was found that, as the hardness increases, the size mismatch results in a decrease in the modulus of elasticity; however, the normalized hardness characteristic increases. It has been found that, when the enthalpy of mixing of the bcc high-entropy alloys shifts to negative values, its effect on the hardness and modulus of elasticity is nonmonotonic. A formula for calculating the modulus of elasticity of high-entropy alloys with a bcc structure has been suggested that is based on the alloy composition and role of the most refractory metallic component.
引用
收藏
页码：477 / 481
页数：5
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