Study on properties of single-phase high entropy alloys with FCC structure based on the empirical electron theory

被引：9

作者：

Guo, Xinpeng ^{[1
]}

Guo, Yongquan ^{[1
]}

Yin, Linhan ^{[1
]}

机构：

[1] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 102206, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 896卷

关键词：

Valence electron structures; Melting points; Cohesive energy; Hardness; Magnetic moments; AL; CORROSION; STABILITY;

D O I：

10.1016/j.jallcom.2021.162892

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：

The valence electron structures, thermal properties, hardness and magnetic moments of single-phase high entropy alloys with the face-centered cubic structure have been first investigated with the empirical electron theory of solids and molecules. The theoretical bond lengths agree with the experimental ones well. The calculated melting points of CrFeCoNi, CrMnFeCoNi and CrFeCoNiCu alloys are consistent with their differential thermal analysis (DTA) measured ones. The calculated magnetic moments of ferromagnetic FeCoNi and FeCoNiX0.25 (X]Al or Si) alloys agree with the observed ones well. The physical properties of these alloys are strongly associated with their valence electron structures. It is suggested that the melting point, cohesive energy, hardness and magnetic moments of the face-centered cubic high entropy alloys are mainly modulated by bonding factor f, covalent electrons per atom nc/atom, covalence electron pair nA and 3d magnetic electron, respectively. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：12

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