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Arabian Journal for Science and Engineering
Published in: Arabian Journal for Science and Engineering 7/2019

02-05-2019 | Research Article - Physics

Mechanism of FCC structure formation in NiCoFeCuMn equiatomic high-entropy alloys

Authors: Chenghuang Tang, Haimei Ye, Yongzhong Zhan

Published in: Arabian Journal for Science and Engineering | Issue 7/2019

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Abstract

Microstructural formation mechanism of NiCoFeCuMn equiatomic high-entropy alloys has been discussed from a viewpoint of interaction energy. It is indicated that when the interaction energy (Iij) is higher than a threshold value (It), spinodal decomposition may occur, leading to segregation of similar atoms and formation of a phase independently. Segregation of similar atoms is prone to appear in the alloys containing Fe–Cu or Cu–Cr components. However, when it is Iij < It, heterogeneous atoms segregation may appear. Components like Mn–Ni, Mn–Cu and Mn–Co et al. in the NiCoFeCuMn alloy prone to segregate. For the equiatomic HEAs, interaction energy Iij can effectively reflect the formation mechanism of single-FCC crystal structure and is a principle criterion for material design.
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Metadata
Title
Mechanism of FCC structure formation in NiCoFeCuMn equiatomic high-entropy alloys
Authors
Chenghuang Tang
Haimei Ye
Yongzhong Zhan
Publication date
02-05-2019
Publisher
Springer Berlin Heidelberg
Published in
Arabian Journal for Science and Engineering / Issue 7/2019
Print ISSN: 2193-567X
Electronic ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-019-03875-x

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