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Min Zhang, Jin-xiong Hou, Hui-jun Yang, Ya-qin Tan, Xue-jiao Wang, Xiao-hui Shi, Rui-peng Guo, and Jun-wei Qiao, Tensile strength prediction of dual-phase Al0.6CoCrFeNi high-entropy alloys, Int. J. Miner. Metall. Mater., 27(2020), No. 10, pp. 1341-1346. https://doi.org/10.1007/s12613-020-2084-2
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The evolution of the microstructure and tensile properties of dual-phase Al0.6CoCrFeNi high-entropy alloys (HEAs) subjected to cold rolling was investigated. The homogenized Al0.6CoCrFeNi alloys consisted of face-centered-cubic and body-centered-cubic phases, presenting similar mechanical behavior as the as-cast state. The yield and tensile strengths of the alloys could be dramatically enhanced to ~1205 MPa and ~1318 MPa after 50% rolling reduction, respectively. A power-law relationship was discovered between the strain-hardening exponent and rolling reduction. The tensile strengths of this dual-phase HEA with different cold rolling treatments were predicted, mainly based on the Hollomon relationship, by the strain-hardening exponent, and showed good agreement with the experimental results.
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