On the influence of solution heat treatment at various quencching rates on the damping capacities and the damping peaks of the 6061Al/SiC_p MMC,which was fabricated by spray-atomization and co-deposition,was studied. The results show that,all the specimens undergoing different heat treatments exist the temperature damping peak between 130℃ and 200℃. Futhermore,the damping peak shifts to higher temperature when frequency increases. By Arrhenius equation, we can get the active energy of the damping peak, whic...