Abstract
The AlSi30p/5052Al composite with porous particle layer was successfully produced by hot rolling. Numerous interparticle interfaces and pores were seen in the particle layer. The dynamic mechanical analysis shows that the internal friction and the storage modulus of the composites are higher than that of the matrix. Due to the presence of an intermediate particle layer, dislocation and residual internal stress increase in the composites, and thereby improve the storage modulus of the composites. The comprehensive damping index of the composites is better than that of the matrix. The synergistic damping effect caused by the porous structure and a large number of interfaces between particles in the particle layer improve the damping capacity of the composites.
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