Wear resistant alloy for high temperature applications

Details Wear resistant alloy for high temperature applications Wear resistant alloy for high temperature applications

C - Chemistry, Metallurgy

22

C

C22C 30/00 (2006.01) B22D 25/00 (2006.01) F01L 3/02 (2006.01)

Patent

CA 2688647

Low cost alloys resistant to mechanical requirements related to high temperatures, resistant to corrosion, resistant to abrasion, with high workability and which meet different requirements in the conditions for application in either exhaust or intake valves for internal combustion engines. The main features of the alloys is the precipitation of Ni3Nb and niobium carbides in its microstructure. In percentage, its mass consists of: 0.15 to 0.50% C, up to 3.0% Mn, up to 1.0% Si, 12.0 to 25.0% Cr, 25.0 to 49.0% Ni, up to 0.50% Mo, up to 0.50% W, up to 0.50% V, 0.50 to 5.0% Cu, 1.85 to 3.0% Al, 1.0 to 4.5% Ti, 3.1 to 8.0% Nb, 0.001 to 0.02% B, 0.001 to 0.10% Zr, up to 2.0% Co, where (Ni + Co) is not higher than 50.0% in mass, nor lower than 25% in mass. The rest is made of iron and impurities inevitable to the Alloy manufacture procedure.

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