Comments on "Experimental assessment of the thermodynamic factor for diffusion in CoCrFeNi and CoCrFeMnNi high entropy alloys"

被引：7

作者：

Belova, Irina V. ^{[1
]}

Murch, Graeme E. ^{[1
]}

机构：

[1] Univ Newcastle, Univ Ctr Mass & Thermal Transport Engn Mat, Sch Engn, Callaghan, NSW 2308, Australia

来源：

SCRIPTA MATERIALIA | 2019年 / 172卷

基金：

澳大利亚研究理事会;

关键词：

High entropy alloys; Diffusion; Interdiffusion; Quasi-binary; Pseudo-binary; VACANCY-WIND FACTORS; INTERDIFFUSION; KINETICS;

D O I：

10.1016/j.scriptamat.2019.07.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this contribution, as comments to the paper in Scripta Materialia, v.157, p.81, 2018, we show that the pseudo-binary approach for analysis of interdiffusion in multicomponent alloys has its reference value of the Manning factor (vacancy-wind factor) that is very different from true binary interdiffusion. In true binary interdiffusion, this factor is usually compared with unity. In the pseudo-binary analysis this reference value must be changed to the inverse of N-1 + N-2, where N-i are the compositions (mole fractions), and components 1 and 2 are the atomic components that have different terminal compositions in the corresponding experiment. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：110 / 112

页数：3

共 15 条

[1] A high accuracy diffusion kinetics formalism for random multicomponent alloys: application to high entropy alloys [J].