Solid solutioning in equiatomic alloys: Limit set by topological instability
Artikel i vetenskaplig tidskrift, 2014

Solid solutioning in equiatomic alloys becomes an interesting and timely topic, considering the current interest at high-entropy alloys (HEAs) in the materials community. In the circumstances where there is no such a differentiation of the solvent and solutes, it is intriguing to explore the solid solution limit in HEAs. In this work, a series of fcc structured equiatomic alloys were specially designed, following the valence electron concentration rule, to study the solid solutioning in the assumed pseudo binary Ni-X (X = Co, Fe, Cr, Cu) systems. The solid solution limit of the multi-component equiatomic alloys was found to set by the topological instability. The decomposition of the single-phase solid solution occurred when the lattice distortion reached a critical strain of 0.018. © 2013 Elsevier B.V. All rights reserved.

High-entropy alloys

Multicomponent solidification

X-ray diffraction

Författare

Sheng Guo

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

C Ng

Hong Kong Polytechnic University

Z. Wang

City University of Hong Kong

C. Liu

City University of Hong Kong

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 583 410-413

Ämneskategorier

Metallurgi och metalliska material

Styrkeområden

Materialvetenskap

DOI

10.1016/j.jallcom.2013.08.213