Abstract
A New ternary Al-Ti-N alloy was prepared by the reaction sintering of pure aluminum powder and TiN powder. The results are as follows :
(1) The alloy become hard on reaction sintering. This hardening is caused by the formation of an intermetallic compound, A13Ti and a nitride, A1N during sintering.
(2) The AIN phase is formed at the sites where the TiN particles existed before reaction sintering while the Al3Ti phase appears to form a concentric circle like structure around these A1N particles. Therefore, this alloy is a composite material.
(3) The high-temperature hardness of this alloy is very much higher than that of a conventional Al-based high-strength alloy, 7075-T6. This alloy is expected to be a hopeful material.
