Corrosion behaviour and heat treatment in low-melting Ni-Cu-Mn alloy.

Abstract

The appropriate procedure to improve corrosive property of B-grain in Ni-Cu-Mn casting alloy was to do the heat treatment at 350 degrees C for 6 hrs, because heavy corrosive behaviour was observed for only B-grain in dendritic A-grain, disk-like B-grain and very large C-grain. Then, new grain with corrosion-resistance appeared at previous location of B-grain.