TiAl-based intermetallic compound.

摘要

A TiAl-based intermetallic compound has a metallographic structure which includes a region A having fine beta -phases dispersed in a gamma -phase. The volume fraction Vf of the beta -phases in the region A is set equal to or more than 0.1% (Vf >/= 0.1%). Thus, the beta -phases can exhibit a pinning effect to prevent a transgranular pseudo cleavage fracture in the gamma -phase, thereby providing an enhanced high-temperature strength of the TiAl-based intermetallic compound.