Ni-base dual multi-phase intermetallic compound alloy containing Nb and C, and manufacturing method for same

摘要

The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure comprising a primary precipitate L1₂ phase and an (L1₂+D0₂₂) eutectoid microstructure, and which comprises: more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; more than 0 atomic % and up to 12.5 atomic % of Nb; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.