采用OLYMPUS光学显微镜、XRD以及倒扭摆法,研究了退火态M2052阻尼合金的阻尼性能随工况温度变化的情况。实验结果表明:M2052合金在室温下的阻尼性能良好。合金的阻尼性能随应变振幅的增加而快速升高后,随应变振幅的进一步增加而基本保持不变。当工况温度低于M2052合金马氏体向奥氏体转变温度时,随温度的升高,孪晶密度下降,孪晶界减少,阻尼性能减小;当工况温度高于马氏体向奥氏体转变温度时,马氏体开始向奥氏体转变,导致母相和马氏体界面和马氏体与马氏体界面减少,同时孪晶继续减少,M2052合金阻尼性能加速下降。 Using OLYMPUS optical microscope, XRD and inverted pendulum pendulum method, the damping properties of annealed M2052 damping alloy were studied with the change of working temperature. The experimental results show that the damping properties of M2052 alloy at room temperature are good. The damping property of the alloy increases rapidly with the increase of strain amplitude, and remains unchanged with the further increase of strain amplitude. When the working temperature is lower than the martensite to austenite transition temperature of M2052 alloy, with the increase of temperature, the twin density decreases, the twin boundary decreases, and the damping performance decreases. When the working temperature is higher than the martensite When the austenite transformation temperature changes, the martensite begins to transform into austenite, resulting in the decrease of the interface between martensite and martensite and the decrease of the interface between martensite and martensite, while the twins continue to decrease. The damping property of M2052 alloy decreases rapidly.