高强度镁合金阻尼性能的研究  

Damping Capacity of Several High Strength Magnesium Alloys

作　　者：付彭怀[1] 潘厚华[1] 高菲[1] 李应典[2] 彭立明[1] 蒋海燕[1] 翟春泉[1] 

机构地区：[1]上海交通大学轻合金精密成型国家工程研究中心,金属基复合材料国家重点实验室 [2]上海卫星工程研究所

出　　处：《特种铸造及有色合金》2013年第7期593-596,共4页Special Casting & Nonferrous Alloys

基　　金：上海航天基金资助项目(HTJ10-18);国家高技术研究发展计划(863计划)资助项目(2009AA033501)

摘　　要：对比研究了AZ91D、ZK51(Mg-5Zn-Zr)、WE43、NZ30K(Mg-3Nd-0.2Zn-Zr)、GW103K(Mg-10Gd-3Y-Zr)、GW83K(Mg-8Gd-3Y-Zr)镁合金室温下的阻尼性能。结果表明,上述高强度镁合金在10%的屈服强度时的比阻尼性能P0.1(2π·tanφ)在4.71%～8.55%之间,属于中等阻尼性能材料。根据比阻尼性能P0.1的平均值,几种高强度镁合金阻尼性能的排序为WE43<ZK51<GW103K<AZ91D<GW83K<NZ30K。从应变-阻尼曲线来看,固溶处理后的峰值时效热处理(T6处理)通常会降低高强度镁合金的阻尼性能,而高温过时效处理可能会提高合金的阻尼性能。峰值时效热处理降低合金的阻尼性能与细小弥散的析出相有关,而过时效改善合金的阻尼性能应当与析出相的粗化有关。The damping capacity of several high strength magnesium alloys, such as AZ91D, ZK51 （Mg-5Zn-Zr）, WE43, NZ30K （Mg-3Nd-0.2Zn-Zr）, GW103K （Mg-10Gd-3Y-Zr）, GW83K （Mg-8Gd-3Y-Zr）, was examined. The results indicate that the specific damping capacity P0.1 （2π·tanφ） of these magnesium alloys under 10% yield strength stress is in range of 4.71% ~ 8.55%, belonging to medium-damping materials. Based on the average value of P0.1, the specific damping capacity of these high strength magnesium alloys is in following order： WE43 ZK51 GW103K AZ91D GW83K NZ30K. According to the strain-damping capacity curves, the peak-aging treatment after solution treatment （T6） often reduce the damping capacity of these high strength magnesium alloys, while over aging treatment at high temperature can improve their damping capacity. The reduced damping capacity led by peak-aging treatment maybe related to fine precipitates, while the improved damping capacity by over aging treatment maybe attributed to the coarsening of the precipitates.

关 键 词：镁合金 阻尼性能 NZ30K GW103K GW83K 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG135[金属学及工艺—金属材料]