The effect of heat treatment on damping characterization of TiC/AZ91 composites

Magnesium matrix composites prepared by in situ synthesis methods were managed with heat treatment. The damping capacity of foundry composites and heat-treated composites is described. In order to investigate the relation between damping capacity and strain amplitude, temperature, a series of experiments is given. The research results confirmed that heat treatment is advantageous to improving damping capacity of the composites. In addition, heat treatment can change the location of temperature–damping peak on temperature–damping curve. The effect of heat treatment on damping capacity and the damping mechanism is explained through dislocation motion and grain boundary slip.