High-Temperature Age-Hardening of a Novel Cost-Effective Fe 45Ni 25Cr 25Mo 5 High Entropy Alloy

14 Pages Posted: 4 Sep 2019

See all articles by Yu Yin

Yu Yin

University of Queensland - School of Mechanical and Mining Engineering

Zhihan Chen

University of the Sunshine Coast - School of Science and Engineering

Ning Mo

University of Queensland - School of Mechanical and Mining Engineering

Damon Kent

University of Queensland - School of Mechanical and Mining Engineering; University of the Sunshine Coast - School of Science and Engineering

Adhitya Riadhi Candella

University of Queensland - School of Mechanical and Mining Engineering

Kai En Koey

University of Queensland - School of Mechanical and Mining Engineering

Qiyang Tan

University of Queensland - School of Mechanical and Mining Engineering

Michael Bermingham

University of Queensland - School of Mechanical and Mining Engineering

Ming-Xing Zhang

University of Queensland - School of Mechanical and Mining Engineering

Abstract

Considering the high potential of age-hardening in metastable non-equiatomic high entropy alloys (HEAs), the high-temperature ageing behaviour of a newly developed cost-effective Fe45Ni25Cr25Mo5 HEA with a face-cantered cubic (FCC) matrix was investigated. The alloy demonstrates a significant high-temperature age-hardening response and a good balance of strength and ductility was achieved with compression yield strength of 543.7 MPa, ultimate strength of 1098.1 MPa and elongation of 40% at the peak aged (900°C for 48 hours) condition. Such high-temperature age response of the Fe45Ni25Cr25Mo5 alloy was attributed to the precipitation strengthening by the monoclinic Cr5.5Mo1.5Fe6.5Ni1.5-type precipitates formed during the ageing.

Keywords: High entropy alloys, High-temperature aging, Precipitation hardening, Intermetallics

Suggested Citation

Yin, Yu and Chen, Zhihan and Mo, Ning and Kent, Damon and Candella, Adhitya Riadhi and Koey, Kai En and Tan, Qiyang and Bermingham, Michael and Zhang, Ming-Xing, High-Temperature Age-Hardening of a Novel Cost-Effective Fe 45Ni 25Cr 25Mo 5 High Entropy Alloy. Available at SSRN: https://ssrn.com/abstract=3445164 or http://dx.doi.org/10.2139/ssrn.3445164

Yu Yin

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Zhihan Chen

University of the Sunshine Coast - School of Science and Engineering

Australia

Ning Mo

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Damon Kent

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

University of the Sunshine Coast - School of Science and Engineering

Australia

Adhitya Riadhi Candella

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Kai En Koey

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Qiyang Tan

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Michael Bermingham

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Ming-Xing Zhang (Contact Author)

University of Queensland - School of Mechanical and Mining Engineering ( email )

St Lucia
Brisbane, Queensland 4072
Australia

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