Abstract
Nickel was added to improve the ductility of a new reaction sintered Al-Ti-N alloy which consists of A13Ti and A1N.phases. The added Ni transformed the crystal structure of A13Ti from DO22 to a, high symmetry Li2, and as a result, improved'the bending strength and ductility at the room temperature. Furthermore, it was found that the hardness of the alloy with L12-A13Ti as a constituent increased with an increase in temperature up to about 700K wherease the hardness of the alloy with DO22-A13Ti as a constituent decreased with an increase in temperature. Thus, this alloy is expected to be a hopeful material.
