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Abstract：
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Based on the numerical simulation software DEFORM-3D, the die forging process of Mg-9Gd-3Y-0.6Zr-0.05Ag magnesium alloy was simulated, and the microstructures and mechanical properties in the top (T), middle (M) and bottom (B) of forgings were studied. The results show that after die forging, the temperature and strain in the inner region of forgings are unevenly distributed from T to B along the extrusion direction. Among them, the temperature gradually increases, and the strain first increases and then decreases. In addition, under the combined effect of grain size and texture, the yield strength of forgings is the highest in the B followed by the M, and it is lowest in the T. Thus, the temperature and strain distribution characteristics of forgings lead to more uniform structure and weaker texture in the M, which reflects the optimal comprehensive mechanical properties with the yield strength of 198 MPa, the tensile strength of 312 MPa and the elongation of 17.0%.
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Funds：
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湖南省自然科学基金资助项目（2019JJ50787）
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AuthorIntro：
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张宗良（1995-），男，硕士研究生，E-mail：1035482180@qq.com；通讯作者：高永浩（1986-），男，博士，副教授，E-mail：gaoyonghao_009@163.com
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Reference：
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