Ni3Al-based intermetallic compound with dual multi-phase microstructure, production method thereof, and heat resistant structural material

摘要

An intermetallic compound having excellent mechanical properties at high temperatures is provided. An intermetallic compound of the present invention contains greater than 5 at % and not greater than 13 at % of Al, not less than 9.5 at % and less than 17.5 at % of V, not less than 0 at % and not greater than 3.5 at % of Ti, not less than 0 weight ppm and not greater than 1000 weight ppm of B, and the remaining portion consisting of Ni and inevitable impurities, and having a dual multi-phase microstructure comprising a primary L12 phase and an (L12+D022) eutectoid microstructure.