Diqing WAN
,
Jincheng WANG
,
Gaifang WANG
,
Lin LIN
,
Zhigang FENG
金属学报(英文版)
doi:10.1016/S1006-7191(08)60063-0
Microstructure observation and dynamic mechanical analysis were carried out to investigate the precipitation and responding damping behaviors of AZ31 magnesium alloy. All the strain amplitude-dependent damping curves of the aged alloys are located between the curves of solutionized and as-cast alloys, although they have different critical strain amplitudes. The G-L theory is employed to explain the damping mechanism involving the interaction between the dislocation and the precipitated phase. In addition, a damping peak is observed at temperatures close to 330 ℃ for AZ31 magnesium alloy, which is related to the β-Mg17Al12 phase dissolution.
关键词:
Magnesium alloys
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