Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2018-03-15

Journal: MATERIALS & DESIGN

Included Journals: EI、SCIE

Volume: 142

Page Number: 101-105

ISSN: 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.