Tensile strength prediction of dual-phase Al0.6CoCrFeNi high-entropy alloys
来源期刊：International Journal of Minerals Metallurgy and Materials2020年第10期
论文作者：Min Zhang Jin-xiong Hou Hui-jun Yang Ya-qin Tan Xue-jiao Wang Xiao-hui Shi Rui-peng Guo Jun-wei Qiao
文章页码：1341 - 1346
摘 要：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.
Min Zhang1，Jin-xiong Hou1，Hui-jun Yang1,2，Ya-qin Tan1，Xue-jiao Wang1，Xiao-hui Shi1，Rui-peng Guo1，Jun-wei Qiao1,2
1. College of Materials Science and Engineering, Taiyuan University of Technology2. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology
摘 要：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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