| Thermal stability of Al-Mg-Sc-Zr alloy |
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| 作者姓名： | 赵卫涛 闫德胜 戎利建 |
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| 作者单位： | Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| 摘 要： | The thermal stability of Al3（Sc,Zr） precipitates in the cold worked Al-Mg-Sc-Zr alloy after elevated temperature exposure was investigated. The evaluation was conducted using room temperature tensile, Vicker＇s hardness, optical metallography and scanning electron microscope （SEM） with the backscatter. The results show that the Al3（Sc,Zr） precipitates and mechanical properties have no obvious change, and the grains keep elongated along the working direction as that in cold worked sample after exposure at 300℃ for 1 000 h. The coarsening of Al3（Sc,Zr） precipitates occurs and is no longer effective on the recrystallization resistance, and partial recrystallization is observed after 400℃ exposure. In particular, after 500℃ exposure, the hardness decreases drastically and the alloy has fully recrystallized due to the obvious coarsening of Al3（Sc,Zr） precipitates.
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| 关 键 词： | Al-Mg-Sc-Zr合金 热稳定性 力学性质 评价 再结晶 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006-06-30 |
Thermal stability of Al-Mg-Sc-Zr alloy |
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| ZHAO Wei-tao, YAN De-sheng, RONG Li-jian.Thermal stability of Al-Mg-Sc-Zr alloy[J].Transactions of Nonferrous Metals Society of China,2006,16(A02):175-179. |
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| Authors: | ZHAO Wei-tao YAN De-sheng RONG Li-jian |
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