(哈尔滨理工大学 材料科学与工程学院，
哈尔滨 150080)
摘 要: 研究了时效时间、 时效温度对ZMnD-1J四元锰铜合金阻尼性能的影响规律，进而借助X射线衍射仪， 系统地研究了该合金时效过程的晶体结构变化规律。 结果表明： ZMnD-1J四元锰铜合金阻尼性能对时效温度非常敏感， 阻尼性能只在一个很小的温度区间才能获得， 在430℃时效可获得最佳的阻尼性能； 该合金阻尼性能对时效时间也非常敏感， 最佳阻尼性能只在时效2h才能获得； 合金的阻尼性能与晶体结构有着密切的联系， 只有面心正方的晶体结构才能赋予材料高阻尼特性， 时效后阻尼性能的突变是晶体结构突变的结果。
关键字: 阻尼合金； Mn-Cu合金; 时效; 晶体结构
（College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin150080, China）
Abstract:The effect of aging temperature and time on the damping property of ZMnD-1J Mn-Cu alloy was studied. Furthermore, the changes of crystal structure in the process of aging were investigated by XRD. The results show that, the damping property of ZMnD-1J Mn-Cu alloy is highly sensitive to the aging temperature and time .When the temperature is controlled in a narrow range, about 430℃, the time is about 2h , the best damping property is obtained. There are close relationships between the damping property and crystal structure. Only fcc structure appears high damping property. The abrupt change of crystal structure leads to the sudden change of damping property after aging.
Key words: damping alloy； Mn-Cu alloy； aging； crystal structure
