Mg-6Gd-3Y-0.5Zr镁合金阻尼性能及机理研究  

Research on Damping Performance and Mechanism of Mg-6Gd-3Y-0.5Zr Magnesium Alloy

作　　者：孟德浩 邢力超 王非凡 马飞 袁文全 MENG Dehao;XING Lichao;WANG Feifan;MA Fei;YUAN Wenquan(Beijing Institute of Astronautical Systems Engineering,Beijing 100076)

机构地区：[1]北京宇航系统工程研究所,北京100076

出　　处：《宇航材料工艺》2025年第1期93-97,共5页Aerospace Materials & Technology

摘　　要：Mg-6Gd-3Y-0.5Zr镁合金已开始应用于航天结构产品,其材料阻尼性能直接关系到结构的动态特性及响应,采用DMA测试仪对其阻尼性能进行了测试并分析了其阻尼机理。结果表明:Mg-6Gd-3Y-0.5Zr合金阻尼性能随应变振幅增大而增大,其常温下符合G-L位错阻尼理论;合金阻尼性能随温度升高而增加,在测试的1~80 Hz范围内,频率越低则阻尼随温升的变化越敏感,温度对其阻尼性能的影响符合Schoeck理论。The Mg-6Gd-3Y-0.5Zr magnesium alloy had been used in aerospace structural products,its internal damping performance was directly related to the dynamic characteristics and response of structures,the internal damping performance of Mg-6Gd-3Y-0.5Zr magnesium alloy was studied using DMA tester and the mechanism was analyzed.The results show that the damping of Mg-6Gd-3Y-0.5Zr alloy gradually increases with the increase of strain amplitude and the mechanism at temperature conforms to the G-L dislocation damping theory.The damping performance of alloy gradually increases with the increase of temperature.Within the tested frequency range of 1~80 Hz,the lower the frequency is,the more sensitive the damping is to the change of temperature,and the influence of temperature on damping performance conforms to the Schoeck theory.

关 键 词：Mg-6Gd-3Y-0.5Zr镁合金 阻尼性能 阻尼机理 

分 类 号：TB30[一般工业技术—材料科学与工程]