METHOD FOR PRODUCING HIGH HARDNESS HIGH CHROMIUM CAST IRON POWDER ALLOY

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a high chromium cast iron powder alloy having hardness exceedingly higher than that of the conventional casting material by refining and homogenizing its structure. SOLUTION: High chromium cast iron rapidly solidified alloy powder having a composition containing, by mass, 11 to 30% chromium and 2.2 to 5.0% carbon, and the balance substantially iron is refined at a cooling rate of >=104 deg.C/sec and is thereafter subjected to discharge plasma sintering in the air.