Research on Properties of SiCp/AZ61 Magnesium Matrix Composites in Fabrication Processes
The microstructural structures of SiCp/AZ61magnesium matrix composite were studied in three different casting processes, and their hardness was measured. The results indicated that SiCp/AZ61 composites fabricated in stirring melt casting process, compared to those in fully liquid stirring casting process and in semi-solid stirring casting process, possessed fairly uniform distribution of SiC particulates and few porosity rate. It was an ideal metal matrix composites fabricated process. The Vickers hardness of non-reinforcement AZ61 magnesium alloy is higher than that of semi-solid billet, and the Vickers hardness of SiCp/AZ61 composite is obviously higher than that of the matrix. In the meantime, the Vickers hardness of SiCp/AZ61 composite can be continuously enhanced with an increasing of volume fraction of SiC particles.
Young Won Chang, Nack J. Kim and Chong Soo Lee
H. Yan et al., "Research on Properties of SiCp/AZ61 Magnesium Matrix Composites in Fabrication Processes", Materials Science Forum, Vols. 561-565, pp. 945-948, 2007