Interdiffusion in the FCC-structured Al-Co-Cr-Fe-Ni high entropy alloys: Experimental studies and numerical simulations

被引：139

作者：

Dabrowa, Juliusz ^{[1
]}

Kucza, Witold ^{[1
]}

Cieslak, Grzegorz ^{[2
]}

Kulik, Tadeusz ^{[2
]}

Danielewski, Marek ^{[1
]}

Yeh, Jien-Wei ^{[3
]}

机构：

[1] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, Al Mickiewicza 30, PL-30059 Krakow, Poland

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, Woloska 141, PL-02507 Warsaw, Poland

[3] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 674卷

关键词：

Diffusion; Interdiffusion; Simulation; High entropy alloys; MICROSTRUCTURE; DIFFUSION;

D O I：

10.1016/j.jallcom.2016.03.046

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：

A group of Al-Co-Cr-Fe-Ni alloys was synthesized for diffusion couple experiments that were performed in the temperature range of 1273-1373 K. The measured concentrations profiles were used to determine the tracer diffusion coefficients of the components, using Darken - Manning approach coupled with LevenbergeMarquardt or genetic algorithm methods of optimization. The approach was also validated against literature data obtained for diffusion in Co-Cr-Fe-Ni-Mn alloys. The results for both systems confirm the theory of sluggish diffusion in High Entropy Alloys, with the values of diffusion coefficients being significantly lower than in the case of conventional alloys. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：455 / 462

页数：8

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