INFLUENCE OF HEAT TREATMENT ON MICROSTRUCTURE AND HARDNESS OF CuAl9Fe4Ni2 ALLOY

Abstract

In this article, the results were presented on changing of microstructure of CuAl9Fe4Ni2 alloy after casting; quenching and tempering. The microstructure were found to be martensitic phases; residual α phase and the intermetallic phase of Fe and Al. By OM, the article has shown that the heat treatment process for alloy hardness is uniform annealing at 850^oC for 02 hours and cooling in water, then tempering at 350^oC for 02 hours which was the highest hardness value.