PURPOSE: To obtain a high strength and high ductility TiAl intermetallic compound by specifying its metallic structure.

CONSTITUTION: The TiAl intermetallic compound contains at least one kind of Cr and V as a third element. Its metallic structure has a lamellar structural region RL formed by alternately laminating TiAl phases La and Ti3Al phases Lb. The content A of the third element satisfies 0.5 atomic % ≤ A ≤ 5 atomic %, and the volume fraction Vf of the lamellar structural region RL safisfies Vf≥8%. The third element contributes mainly to the improvement of the ductility of the TiAl intermetallic compound, and the lamellar structural region RL contributes to the improvement of the strength of the TiAl intermetallic compound.