The Effect of Cold Isostatic Pressing on the Microstructure and Properties of Aluminium Matrix Composite Reinforced with Nano/Micro SiC Particles
Nano sized of 4wt. and micro sized of 15wt. SiC particles reinforced aluminum mental matrix composites fabricated by powder metallurgy vacuum hot pressing sintering were treated by cold isostatic pressing. The effects of cold isostatic pressing on microstructure, density, hardness and wear resistance were investigated and analyzed. The experimental results showed that in the composites reinforced with hybrid SiC particles after cold isostatic pressing treatment, the agglomeration phenomenon and overlap phenomenon around the micron SiC particles disappeared and the surrounding defects were obviously improved, the grains were flattened, and the material was more densely. The composite is characterized by abrasive wear.
Key Engineering Materials