抄録
To realize the TiAl intermetallic compounds by the combustion synthesis process, the mechanical property of the product should be improved. As the remedial measures, it is said that complex microstructure controlling was effective for the TiAl intermetallic compound. In this paper, the combustion synthesis of the Ti-Ni-Al complex intermetallic compounds was attempted, and the microstructure and the mechanical properties of the synthesized products were investigated.
Elemental Ti, Ni, and Al powders were mixed, and the compact made from the mixed powder was reacted by thermal explosion combustion synthesis. However, the heat of reaction was too large, the product melted and the sintered compound could not be obtained. For the some compacts, though the anneal treatment of the compact was performed to reduce the heat of reaction, the product still melted. Therefore, the mixing ratio of the powders was controlled, and the combustion synthesis was performed. For the complex intermetallic compounds obtained, the microstructure, the phases and the mechanical properties were discussed.
