Effect of Thermomechanical Processing Parameters on the Ambient Behavior of 10Volume 6061 AL-Alumina

摘要

Thermomechanical Processing was conducted on a 10 vol. pct. 6061 Alumina particlereinforced 'metal matrix composite' (MMC). The TMP employed consisted of isothermal rolling with intermediate annealing, using a schedule of reduction with constrain strain per pass. The as-processed material exhibited high strength while simultaneously achieving ductility comparable to that of the unreinforced 6061 matrix alloy. In the fully annealed condition, the composite's strength and ductility were essentially equal to those of the unreinforced aluminum. An aging study showed accelerated aging and greater peak strength for the composite. Finally, a process and heat treatment combination was established in an attempt to optimize simultaneously the strength and ductility of the composite. It was found that the composite could be aged to a peak strength of 340 MPA while retaining a ductility of 14 percent elongation to failure. Cast Metal Matrix Composite, Particulate, Processing, Ductility, Aging.