Fabrication and tensile properties at elevated temperatures of TiC particulate reinforced ZA43 composite

A TiC/ZA43 composite has been fabricated by XD casting and compocasting tec hniques in the present work. The microstructure of TiC/ZA43 composite consi sts of TiC particles in size of 0.5 similar to 1.5 mu m dispersed uniformly in a fine granular matrix. The tensile properties of TiC/ZA43 composite at ambient and elevated temperatures (to 250 degrees C) were tested with stre ss-strain plots. The results show that TiC particulate reinforcement remark ably improves the strength of ZA43 alloy at room and elevated temperatures, and the fracture mode of the composite changes from mixed to ductile with the tensile temperature increasing from ambient temperature to about 250 de grees C.