Ni3A1-Based Intermetallic Compound With Dual Multi-Phase Microstructre, Production Method Thereof, and Heat Resistant Structural Material

摘要

An Ni3Al-based intermetallic compound of the present invention comprises 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 5 at % of Nb, not less than 50 weight ppm and not greater than 1000 weight ppm of B, and the remaining portion consisting of Ni and inevitable impurities, and has a dual multi-phase microstructure comprising a primary L12 phase and an (L12+D022) eutectoid microstructure.