NI-BASED COMPOUND SUPERALLOY HAVING EXCELLENT OXIDATION RESISTANCE, PROCESS FOR PRODUCTION THEREOF, AND HEAT-RESISTANT STRUCTURAL MATERIAL

摘要

Disclosed is a Ni-based compound superalloy which comprises more than 5 at% and not more than 13 at% of Al, 3 to 9.5 at% inclusive of V, and 0 to 3.5 at% inclusive of Ti, with the remainder being Ni and unavoidable impurities, and which has a multi-phase structure composed of a pro-eutectoid L12 phase (L12 phase + D022 phase and/or D024 and/or D0a phase) and an eutectoid structure.