Alloy precipitation hardened Co-Ni heat resistant and method for its preparation.

摘要

Precipitation alloy based heat-resistant hardened Co-Ni comprising, all by weight: not more than 0, 05% C; not more than 0, 5% of Si; no more than 1, 0% of Mn; 25 to 45% Ni; from 13 to 22% Cr; 10 to 18% of Mo or 10 to 18% of Mo + 1 / 2W; 0, 1 to 5, 0% of Nb; 0, 1 to 5 0% of Fe; at least one type of 0, 007 0, 10% of REM; 0, 001 to 0, 010% B; 0, 0,007 to 0, 010% Mg and 0, 001 to 0, 20% Zr; the remainder of Co and inevitable impurities; a fine twin structure; a matrix phase; and Co3Mo or Co7Mo6 precipitate limits the fine twin structure and the parent phase.