Calculation of the Hardness of a Multi-Element Equiatomic Metal Alloy

Volume 2 - Issue 3

Zakarian DA* and Khachatrian AV

Received:December 20, 2019;   Published: January 16, 2020

DOI: 10.32474/MAMS.2020.02.000136

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Abstract

A phenomenological approach has been developed for the mathematical description of the hardening of high-entropy alloys (HEAs) and a quantitative assessment of their hardness. It is shown that in HEAs with a bcc lattice, the degree of hardening is always greater than in HEAs with a fcc lattice (with the same number of elements in alloys). To calculate the relative hardening of the alloy, the type of crystal lattice and its parameter value are required. The calculation results are consistent with experimental data. Basic parameters of HEAs are calculated from first principles. The proposed method can be considered acceptable for assessing the hardness and degree of hardening of multi-element alloys (HEAS).

Keywords: Multielement alloys; energy of interaction of elements; mismatch parameter; distortion density; hardness; heas

Abstract| Introduction| Calculation of Basic Parameters of a HEAs| Modeling the Structure and Properties of HEAs, Calculation Results and Discussion| Summary| References|