A Novel Non-Equiatomic (W35Ta35Mo15Nb15)95Ni5 Refractory High Entropy Alloy with High Density Fabricated by Powder Metallurgical Process

Bohua Duan; Yingrui Yu; Xinli Liu; Dezhi Wang; Zhuangzhi Wu

doi:10.3390/met10111436

Metals (Oct 2020)

A Novel Non-Equiatomic (W35Ta35Mo15Nb15)95Ni5 Refractory High Entropy Alloy with High Density Fabricated by Powder Metallurgical Process

Bohua Duan,
Yingrui Yu,
Xinli Liu,
Dezhi Wang,
Zhuangzhi Wu

Affiliations

Bohua Duan: School of Materials Science and Engineering, Central South University, Changsha 410083, China
Yingrui Yu: School of Materials Science and Engineering, Central South University, Changsha 410083, China
Xinli Liu: School of Materials Science and Engineering, Central South University, Changsha 410083, China
Dezhi Wang: School of Materials Science and Engineering, Central South University, Changsha 410083, China
Zhuangzhi Wu: School of Materials Science and Engineering, Central South University, Changsha 410083, China

DOI: https://doi.org/10.3390/met10111436
Journal volume & issue: Vol. 10, no. 11
p. 1436

Abstract

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A non-equiatomic refractory high entropy alloy (RHEA), (W35Ta35Mo15Nb15)95Ni5 with high density of 14.55 g/cm3 was fabricated by powder metallurgical process of mechanical alloying (MA) and spark plasma sintering (SPS). The mechanical alloying behavior of the metallic powders was studied systematically, and the microstructure and phase composition for both the powders and alloys were analyzed. Results show that the crystal consists of the primary solid solution and marginal oxide inclusion (Nb5.7Ni4Ta2.3O2). In addition, the maximum strength, yield strength and fracture strain are, 2562 MPa, 2128 MPa, 8.16%, respectively.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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