【摘 要】
：
采用金相观察、硬度试验、动态机械热分析等方法研究了退火温度对热轧态Mg-0.6Zr合金阻尼性能的影响。结果表明,热轧态Mg-0.6Zr合金经过1 h退火处理,硬度下降,阻尼性能提高,
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采用金相观察、硬度试验、动态机械热分析等方法研究了退火温度对热轧态Mg-0.6Zr合金阻尼性能的影响。结果表明,热轧态Mg-0.6Zr合金经过1 h退火处理,硬度下降,阻尼性能提高,当退火温度在250～350℃范围内,阻尼性能随退火温度的升高而增加,当退火温度超过350℃后,阻尼性能增幅减小。该合金阻尼性能的变化基本符合G-L位错钉扎模型。
The influence of annealing temperature on the damping properties of hot-rolled Mg-0.6Zr alloy was studied by metallographic observation, hardness test and dynamic mechanical thermal analysis. The results show that after 1 h annealing, the hardness of hot-rolled Mg-0.6Zr alloy decreases and its damping capacity increases. When the annealing temperature is between 250 and 350 ℃, the damping capacity increases with the annealing temperature. When the annealing temperature exceeds After 350 ℃, the increase of damping capacity decreases. The change of damping properties of the alloy is basically consistent with the G-L dislocation pinning model.
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