Effect of the precipitated second phase during aging on the damping capacity degradation behavior of M2052 alloy

摘要：

　　In this study, the damping capacity degradation in Mn-20Cu-5Ni-2Fe alloy (M2052) aged at 435 ℃ for 2-24 hours was investigated.The damping capacity was measured by a torsion pendulum.XRD, SEM and EDS analysis methods were used to characterize the microstructure of specimens.The results showed that aging at 435 ℃ for more than 4 h leaded to the precipitation of α-Mn in the matrix of M2050, which resulted in the decrease of the original damping capacity.Holding the aged samples in 60℃ environment, the damping capacity of under-aged and peak-aged M2052 samples decreased rapidly with the time increasing.While no obvious degradation of damping capacity occurred in the over-aged sample even after 40 d, which is probably due to the precipitation of α-Mn phase in the matrix of alloy.M2050 alloy with high and stable damping capacity can be obtained by aging at 435℃ for 8 h.

关键词： aging damping capacity degradation α-Mn interstitial solute atoms

作者: Ying Zhang Ning Li Jiazhen Yan Jinwu Xie

作者单位: School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China

会议类型: 国际会议

会议名称: The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 36-41

在线出版日期: 2013-08-23（万方平台首次上网日期，不代表论文的发表时间）