Fabrication of (TiB2 − TiC)p/AZ91 magnesium matrix hybrid composite

Magnesium MMCs reinforced with TiB2−TiC particulates were fabricated successfully via a master alloy route using a low cost Al-Ti-B4C system as starting material system. Microstructural characterization of the (TiB2−TiC)/AZ91 composite shows relatively uniform distribution of TiB2 and TiC particulates in the matrix material. Moreover, the results show that the hardness and wear resistance of the composites are higher than those of the unreinforced AZ91 alloy. C 2005 Springer Science + Business Media, Inc