Ti Fiber-Reinforced and Ti Sheet-Enveloped Cast Mg Composite

Tensile property of cast Ti-fiber-reinforced Mg composite was tested and swaging effect of cast Mg covered with Al or Ti plate was examined. Strong interfacial bonding between Ti and Mg was confirmed by the pull-out test and excellent wettability was observed by the scanning electron microscope. Tensile strength of the cast Ti-fiber-reinforced Mg increased with increasing volume fraction of the fiber from 1 to 14%, while the increase of elongation was restricted within 10% of the volume fraction. Interfacial condition between Al and Mg was rather good after the swaging for the three-layer clad prepared free from intermetallic compound. Contact situation of the cast Mg to the Ti cover was once lowered by swaging but became improved by further swaging.