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Metals 2016, 6(11), 277; doi:10.3390/met6110277

Hot Deformation Behavior of As-Cast and Homogenized Al0.5CoCrFeNi High Entropy Alloys

State Key Laboratory of solidification processing, Northwestern Polytechnical University, NO.127, West Youyi Road, Xi'an 710072, China
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Academic Editor: Michael C. Gao
Received: 10 September 2016 / Revised: 3 November 2016 / Accepted: 4 November 2016 / Published: 15 November 2016
(This article belongs to the Special Issue High-Entropy Alloys (HEAs))
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Abstract

The hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys (HEAs) during isothermal compression was investigated as a function of temperature and strain rate. Results indicated that flow stress in a homogenized state was always higher than that in an as-cast state under the same deformation conditions. Moreover, the optimum thermo-mechanical processing (TMP) conditions for the hot working of the homogenized state were identified as 945–965 °C and 10−1.7–10−1.1 s−1 and were easier to determine in practice. Constitutive equations, for both states, correlating the flow stress of Al0.5CoCrFeNi with strain rate and deformation temperature were also determined. View Full-Text
Keywords: high entropy alloy; homogenization; flow stress; constitutive equation; processing map high entropy alloy; homogenization; flow stress; constitutive equation; processing map
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, Y.; Li, J.; Wang, J.; Niu, S.; Kou, H. Hot Deformation Behavior of As-Cast and Homogenized Al0.5CoCrFeNi High Entropy Alloys. Metals 2016, 6, 277.

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