O. L. Vatamanu, A. Sherman, J. Nable, B. Doud, Powdermet Inc., Euclid, OH
High strength Nano composite aluminum alloy powders, cold isostatic pressed, sintered and cold rolled are provided in which the aluminum alloys exhibit high strength, ductility and very high hardness. Attrition milling using low temperature solvent and reactive ingredients was used to obtain aluminum composite powder. The effect of mechanical milling on Nano-crystallite as a hardening phase, cold isostatic pressing on powder morphology, sintering process, mechanical properties of the compacted product and the effect of rolling process have been correlated to the Nano-composite properties. Keywords: Mechanical alloying, Sintering, Aluminum composite, Nano-crystallite,
Summary: High strength Nano composite aluminum alloy powders, cold isostatic pressed, sintered and cold rolled are provided in which the aluminum alloys exhibit high strength, ductility and very high hardness.
