High-Temperature Tribological Behavior of Al0.3Cr0.5Fe1.5Mn0.5Ni High-Entropy Alloys With Addition of Titanium and Carbon

Chun-Hao Peng; Chun-Hao Peng; Che-Wei Tsai; Che-Wei Tsai; Chia-Ming Kuo; Chia-Ming Kuo; Sheng-Min Chiu; Sheng-Min Chiu

doi:10.3389/fmats.2021.787729

Frontiers in Materials (Jan 2022)

High-Temperature Tribological Behavior of Al0.3Cr0.5Fe1.5Mn0.5Ni High-Entropy Alloys With Addition of Titanium and Carbon

Chun-Hao Peng,
Chun-Hao Peng,
Che-Wei Tsai,
Che-Wei Tsai,
Chia-Ming Kuo,
Chia-Ming Kuo,
Sheng-Min Chiu,
Sheng-Min Chiu

Affiliations

Chun-Hao Peng: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Chun-Hao Peng: High Entropy Materials Center, National Tsing Hua University, Hsinchu, Taiwan
Che-Wei Tsai: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Che-Wei Tsai: High Entropy Materials Center, National Tsing Hua University, Hsinchu, Taiwan
Chia-Ming Kuo: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Chia-Ming Kuo: High Entropy Materials Center, National Tsing Hua University, Hsinchu, Taiwan
Sheng-Min Chiu: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Sheng-Min Chiu: High Entropy Materials Center, National Tsing Hua University, Hsinchu, Taiwan

DOI: https://doi.org/10.3389/fmats.2021.787729
Journal volume & issue: Vol. 8

Abstract

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In this study, the Al0.3Cr0.5Fe1.5Mn0.5Ni high-entropy alloys (HEAs) with addition of titanium and carbon was prepared. The as-cast alloys were composed of FCC solid solution and TiC particles, and were further aged and strengthened by precipitation of B2-NiAl phase at 700°C for 10 h to increase hardness from Hv 200 to Hv 400. Tribological properties of the HEAs and commercial tool steel (AISI M2) against Al2O3 under dry sliding condition at room-temperature and elevated temperatures are compared. After high-temperature wear testing, the HEAs demonstrated exceptional oxidation resistance and a lower friction coefficient than M2 steel since the dense glazed layer on the surface of the HEAs served as a lubricant to decrease the friction coefficient, and protected the substrate from oxidation.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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