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Indexed by:期刊论文

Date of Publication:2018-03-15

Journal:MATERIALS & DESIGN

Included Journals:SCIE、EI

Volume:142

Page Number:101-105

ISSN No.:0264-1275

Key Words:Eutectic high entropy alloys; Microstructure; Alloy design

Abstract:Eutectic high entropy alloys (EHEAs) hold promising industrial application potential, but how to design EHEA compositions remains challenging. In the present work, a simple and effective strategy by combining mixing enthalpy and constituent binary eutectic compositions was proposed to design EHEA compositions. This strategy was then applied to a series of (CoCrFeNi) M-x (M = Nb, Ta, Zr, Hf) HEAs, leading to the discovery of new EHEAs, namely, CoCrFeNiNb0.45, CoCrFeNiTa0.4, CoCrFeNiZr0.55 and CoCrFeNiHf0.4. The microstructure of these new EHEAs comprised of FCC and Laves phases in the as-cast state. The experimental result shows that this new alloy design strategy can be used to locate new EHEAs effectively. (c) 2018 Elsevier Ltd. All rights reserved.