镁基高阻尼材料加工工艺研究现状及展望

Research status and prospects of high damping magnesium matrix materials

首先介绍了高阻尼镁合金的两种典型阻尼机制及合金元素、晶粒尺寸、变形工艺、热处理对镁合金阻尼性能的影响。其次,通过分析镁基复合材料的阻尼特点,指出高阻尼材料兼顾高阻尼和高强度是未来研究的发展趋势,但当前关于镁基复合材料的研究有待深入,且存在基体与增强体之间的界面反应等问题需要解决。最后提出通过添加新的增强相,从而引入新的阻尼机制来解决阻尼性能及力学性能的矛盾,将成为镁基复合材料加工的未来研究方向。

In this paper,two typical damping mechanisms of magnesium alloy and the effect of alloying elements,grain size,deformation process and heat treatment on the damping properties of magnesium alloy are introduced firstly.Then the damping mechanism of the magnesium-based composites is analyzed and it is pointed out that high damping material with high damping and high strength is the trend of future research.However,the current research on magnesium-based composites needs to be further studied,and some problems such as interface reaction between matrix and reinforcements need to be solved.Finally,it is proposed that the new damping mechanism should be introduced by adding new reinforcement,solving the contradiction between damping performance and mechanical properties,which will become the future research direction of magnesium matrix composites processing.