50%SiP/Al-Cu and 70%SiP/Al-Cu composites were prepared by hot isostatic pressing(HIP) method using pure elemental powders.The microstructure evolution and dissolution of Al2Cu were studied.The properties of as-hot isostatic pressed composites before and after heat treatment were also investigated.The results show that the prepared SiP/Al-Cu composites are fully dense.The silicon particles well distribute in Al matrix and still keep the original size.The presence of Al2Cu,Si and Al is identified in the as-ho...