PURPOSE: To obtain a TiAl intermetallic compound in which high strength is attained by specifying its metallic structure.

CONSTITUTION: The metallic structure of the TiAl intermetallic compound has plural lamellar structural regions RL. Each lamellar structural region RL is constituted of plural lamellar structural parts L formed by alternately laminating TiAl phases La and Ti3Al phases Lb. The lamellar structural parts L are arranged in such a manner that the laminating direction A of both phases La and Lb is made irregular in the lamellar structural regions RL. Each lamellar structural region RL contributes to the improvement of the cold strength of the TiAl intermetallic compound, and the irregularity relaxes the directionality of its cold strength.