| Mechanical properties of Mg-9Gd-4Y-0.6Zr alloy |
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| 引用本文： | 肖阳 张新明 陈部湘 邓桢桢. Mechanical properties of Mg-9Gd-4Y-0.6Zr alloy[J]. 中国有色金属学会会刊, 2006, 16(A03): 1669-1672 |
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| 作者姓名： | 肖阳 张新明 陈部湘 邓桢桢 |
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| 作者单位： | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Foundation item： Project（51330） supported by the National Fundamental Research Program of China |
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| 摘 要： | The microstructures and mechanical properties of Mg-9Gd-4Y-0.6Zr alloy were investigated. The results show that the ultimate tensile strengths of the extrusion-T5 temper of this alloy at -196, 25,250, 300 and 350℃ are as high as 521,370, 348, 262 and 150 MPa, respectively. It is noteworthy that 8% plasticity occurs at -196 ℃ and 180% superplasticity occurs at 400℃. In the peak hardness of Cast-T5, Cast-T6, Ext-T5 and Ext-T6, the highest is that of Ext-T5. The prismatic precipitates providing an effective barrier to dislocation gliding on the basal plane are the cause of strengthening of this alloy. The plate-shaped precipitates formed on the prismatic planes provide the most effective barriers to the gliding dislocations, and they are the cause of strengthening of this alloy.
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| 关 键 词： | 镁合金 机械性能 微观结构 稀土元素 抗热性 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Mechanical properties of Mg-9Gd-4Y-0.6Zr alloy |
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| XIAO Yang, ZHANG Xin-ming, CHEN Bu-xiang, DENG Zhen-zhen. Mechanical properties of Mg-9Gd-4Y-0.6Zr alloy[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(A03): 1669-1672 |
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| Authors: | XIAO Yang ZHANG Xin-ming CHEN Bu-xiang DENG Zhen-zhen |
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| Abstract: | |
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| Keywords: | Mg-Gd-Y-Zr alloy rare earth element heat resistance mechanical properties |
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