Microstructure,Mechanical Properties and Damping of SiC/Mg97Zn1Y2 Composites  

作　　者：WAN Diqing TANG Hao WANG Houbin WANG Yu YANG Fan SUN Yumeng WANG Yongyong 万迪庆

机构地区：[1]School of Materials Science and Engineering,East China Jiaotong University,Nanchang 330000,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第6期1580-1585,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51665012)。

摘　　要：SiC particles were added to the Mg97Zn1Y2 alloy to improve its mechanical properties and damping properties.The microstructure,mechanical properties,and strain amplitude dependence of high-damping and high-strength SiC/Mg97Zn1Y2 magnesium matrix composites were analyzed.The strain amplitude-dependent damping of SiC/Mg97Zn1Y2 composites and the effect of SiC on this property were discussed herein.In anelastic damping,the strain amplitude-dependent damping curves of the composites were mainly divided into two sections,dominated by the G-L model.When the strain amplitude reaches a certain value,the dislocation motion inside the matrix becomes complicated.Moreover,the damping of the material could not be explained using the G-L model,and a new damping model related to microplastic deformation was proposed.In the anelastic damping stage,with the increase in the amount of the added SiC particles,the damping performance first increases and then decreases.Moreover,the damping value of the composite material is larger than that of the matrix alloy.In the microplastic deformation stage,the damping properties of the composites and matrix alloys considerably increase with the strain amplitude.

关 键 词：high damping high strength magnesium matrix composites strain amplitude 

分 类 号：TB333[一般工业技术—材料科学与工程]