Elevated Temperature Tensile Properties of Ni₃Al Alloyed with Chromium and Cerium Prepared from Elemental Powders

Abstract

Ni₃Al matrix composites are potential materials for high temperature application because of their marvelous temperature dependence of yield strength. We have tried to make Ni₃Al composites reinforced with alumina fibers that have excellent compatibility with Ni₃Al matrix by means of powder metallurgy technique. As a result, we feel keenly that ductility of Ni₃Al matrix composites at elevated temperature must be made better by alloying element. In this sence, chromium and cerium are added to Ni₃Al with boron and tensile properties of these alloys were investigated.