| Effect of erbium on microstructure and thermal compressing flow behavior of Mg-6Zn-0.5Zr alloy |
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| 作者姓名： | 王忠军 张彩碚 邵晓宏 崔建忠 乐启炽 |
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| 作者单位： | [1]College of Science, Northeastern University, Shenyang 110004, China [2]The Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China |
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| 基金项目： | Foundation item： Project（2003AA331110） supported by the High-Tech Research and Development Program of China |
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| 摘 要： | A series of thermal compressing tests of Mg-6Zn-0.5Zr and Mg-6Zn-0.5Zr-1Er alloys were performed on a Gleeble-1500D thermal simulator. The microstructures of thermal compressed Mg-6Zn-0.5Zr and Mg-6Zn-0.5Zr-1Er alloys were determined by optical microscopy, transmission electron microscopy and X-ray diffractometry. The results show that Mg-6Zn-0.5Zr alloy mainly consists of α-Mg and MgZn2 phase, while Mg-6Zn-0.5Zr-1Er alloy comprises α-Mg phase, coarse Mg3ZnnEr2 eutectic, rod-liked Mg3Zn4Er2 precipitated phase, fine I phase particle （Mg3Zn6Er, icosahedral quasicrystal structure）. The peak flow stress becomes larger with increasing strain rate and erbium addition at the same temperature, and gets smaller with increasing deformation temperature at the same strain rate. The deformation activation energy increases with increasing temperature, strain rate and erbium addition. In addition, it is observed that the growth of dynamic recrystallization （DRX） grains of Mg-6Zn-0.5Zr-lEr alloy was markedly suppressed due to the pinning effect of fine I phase and Mg3Zn4Er2 phase during thermal compression.
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| 关 键 词： | 铒 微观结构 镁合金 流动行为 热量压缩 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Effect of erbium on microstructure and thermal compressing flow behavior of Mg-6Zn-0.5Zr alloy |
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| WANG Zhong-jun,ZHANG Cai-bei , SHAO Xiao-hong, CUI Jian-zhong, LE Qi-chi.Effect of erbium on microstructure and thermal compressing flow behavior of Mg-6Zn-0.5Zr alloy[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1774-1778. |
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| Authors: | WANG Zhong-jun ZHANG Cai-bei SHAO Xiao-hong CUI Jian-zhong LE Qi-chi |
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| Abstract: | |
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| Keywords: | Mg-6Zn-0 5Zr alloy erbium flow behavior I phase Mg3Zn4Er2 phase |
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