Texture and stretch formability of rolled Mg-Zn-RE (Y, Ce, and Gd) alloys at room temperature |
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作者姓名: | Zheng-Xu Cai Hai-Tao Jiang Di Tang Zhao Ma Qiang Kang |
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作者单位: | National Engineering Research Center of Advanced Rolling,University of Science and Technology Beijing, Beijing 100083,China |
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摘 要: | To develop a new magnesium alloy with excellent formability at room temperature, the effect of Y, Ce, and Gd addition on texture and stretch formability of Mg-1.5Zn alloys was carried out. The result shows that Y, Ce, and Gd addition in Mg-1.5Zn alloys can effectively weaken and modify the basal plane texture, characterized by TD-split texture in which the position of basal is titled from normal direction (ND) toward transverse direction (TD). When Mg-1.5Zn alloy with Gd addition appears low texture intensity and TD-split texture, where the position of basal poles is tilted by about 4-35° from ND toward to TD, the largest Erichsen value of 7.0 and the elongation rate reaches 29.1% in TD direction. However, Y and Ce addition in Mg-1.5Zn alloys promote a large number of second phase particles, which cancel the contribution of the unique basal texture to stretch formability and ductility.
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关 键 词: | 可成形性 镁合金 Gd Ce 拉伸 RE系 轧制 常温 |
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