Ballistic impact response of thermo-mechanically processed Al alloy (6082)

The performance of cryogenic temperature and room temperature rolled thin aluminium alloy (AA 6082) targets of same final thickness subjected to three different rolling strains and ballistic impact by dome nosed projectile at velocity of ~100 m/s was compared. The behaviour was explained using metallograpic studies. The gained insights were extended to obtain the performance of cryogenic temperature rolled AA 6082 targets to four different rolling strains to same final thicknesses when subjected to ballistic impact using projectiles of two different nose shapes (viz., dome and conical) within a velocity range of 50-250 m/s. The study suggested the existence of an optimum value of thickness reduction for best impact resistance.