A KIND OF INTERFACIAL MICROSTRUCTURE IN THE SiCw/Al COMPOSITE

Orientation relationship between the whisker and the matrix in a silicon carbide whisker reinforced aluminium composite made by squeeze casting has been investigated by using transmission electron microscopy (TEM) technique. Through observation a new phenomenon has been revealed:<110>_SiC//<110>_Al and <111>_SiC//<100>_Al,(about 4°difference). According to the above experimental result a semi-coherent model of the interfacial microstructure in the SiCw/Al composite has been presented.