  The combined effect of ultrasonic vibration (UT) and applied pressure (P) on
microstructure and mechanical properties of Al-5.0Cu-0.6Mn-0.6Fe alloy were
investigated. The best tensile properties produced by P+UT processing are UTS:
268MPa, YS: 192MPa, E.L.: 17.1%, respectively, which increasing by 64%, 59% and
307%, respectively, compare to the Non-treated alloy.
