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
收藏
页码：110 / 112
页数：3
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