Are superior in resistance melting metal loss Characteristic and abrasion resistance the FeNiCrAl based ferrite alloy and its production manner

摘要

PROBLEM TO BE SOLVED: To produce an Fe-Ni-Cr-Al ferritic alloy excellent in molten metal erosion resistance and having extremely good workability and to provide a method for producing the same. ;SOLUTION: This alloy has a compsn. contg., by weight, ≤0.05% C, ≤2% Si, ≤2% Mn, 2 to 15% Ni, 15 to 20% Cr, 2 to 8% Al and one or ≥ tow kinds among Ti, Zr, Hf, V, Nb, Y and rare earth metals by 0.05 to 1.0%, and the balance substantial Fe with inevitable impurities. Furthermore, as for the method for producing the same, this alloy stock is formed into a prescribed shape, which is held under heating in an oxidizing atmosphere heated at 800 to 1,300°C, then, a film essentially consisting of the oxide of aluminum is formed on the surface of the member, and after that, cooling is executed at a rate of that in air cooling or above.;COPYRIGHT: (C)1997,JPO