Homogeneous alloy powder and superalloy article repair method

Details Homogeneous alloy powder and superalloy article repair method Homogeneous alloy powder and superalloy article repair method

C - Chemistry, Metallurgy

22

C

26/207, 75/32

C22C 1/05 (2006.01) B22F 1/00 (2006.01) B23K 35/30 (2006.01) B23P 6/04 (2006.01)

Patent

CA 1214053

HOMOGENEOUS ALLOY POWDER & SUPERALLOY ARTICLE REPAIR METHOD ABSTRACT OF THE DISCLOSURE A powder mixture for use in a method of repairing a superalloy article includes first and second Ni base superalloy powders. The first powder, characterized by superior hot corrosive resistance along with good oxidation resistance and the substantial absence of melting point depressants selected from Si and B greater than normal impurity levels, is included in the range of 30-70 wt % of the mixture. The second powder has a composition substantially within the same composition range as that of the first powder with the inclusion, by wt, of 0.5-5% B and up to 6% Si.

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