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Authors: C. M. Cao ; J. Xu ; Y. X. Hao ; W. Tong and L. M. Peng

Affiliation: CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, School of Engineering Science and University of Science and Technology of China, China

Keyword(s): high-entropy alloys; microstructures; creep deformation; activation energy; stacking fault energy

Abstract: The creep deformation behavior of thermomechanically-treated AlxCrMnFeCoNi (x=0.4 and 0.6) high-entropy alloys was investigated under constant tensile loadings at 600-700 °C. It was found that the two alloys exhibited a mixed structure of fcc+bcc solid solutions with equiaxed grains and higher Al content produced a larger volume fraction of bcc phase. The double logarithmic plot of creep rate versus applied stress in Al0.4CrMnFeCoNi alloy was divided into two distinct regions with different stress exponents and activation energies depending on testing temperature and applied stress. In contrast, the Al0.6CrMnFeCoNi alloy exhibited a single value of stress exponent without transitional features. The Al0.6CrMnFeCoNi alloy showed lower creep resistance at a given stress and testing temperature compared to Al0.4CrMnFeCoNi alloy, which was ascribed to the higher stacking fault energy in the former alloy.

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Paper citation in several formats:
Cao, C.; Xu, J.; Hao, Y.; Tong, W. and Peng, L. (2018). High-Temperature Creep Behavior of AlxCrMnFeCoNi High-Entropy Alloys. In Proceedings of the International Workshop on Materials, Chemistry and Engineering - IWMCE; ISBN 978-989-758-346-9, SciTePress, pages 71-76. DOI: 10.5220/0007434700710076

@conference{iwmce18,
author={C. M. Cao. and J. Xu. and Y. X. Hao. and W. Tong. and L. M. Peng.},
title={High-Temperature Creep Behavior of AlxCrMnFeCoNi High-Entropy Alloys},
booktitle={Proceedings of the International Workshop on Materials, Chemistry and Engineering - IWMCE},
year={2018},
pages={71-76},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007434700710076},
isbn={978-989-758-346-9},
}

TY - CONF

JO - Proceedings of the International Workshop on Materials, Chemistry and Engineering - IWMCE
TI - High-Temperature Creep Behavior of AlxCrMnFeCoNi High-Entropy Alloys
SN - 978-989-758-346-9
AU - Cao, C.
AU - Xu, J.
AU - Hao, Y.
AU - Tong, W.
AU - Peng, L.
PY - 2018
SP - 71
EP - 76
DO - 10.5220/0007434700710076
PB - SciTePress

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