Abstract：The 30% SiCp/2A02A1 composite was prepared by hot-press sintering process. The sintered sample
was hot pressed. The microstructure and fracture morphology of the composite were observed by OM, SEM and
TEM, and the density and mechanical properties were measured respectively. The results show that the interface between
SiCp/2A02A1 composite and reinforcement is well combined with clear and smooth boundry. After hot extrusion,
the segregation of SiC particles decreases, and SiC is uniformly distributed in the matrix, and high density
dislocation and subgrain are formed in the matrix. The density and mechanical properties of the composites increased
significantly. After aging treatment, disc-shaped precipitation -Al2Cu phase is formed in the matrix of hot extrusion
sample.
2022, Vol. 32 
