Effect of Temperature & Holding Time on Recrystallization Behaviour of al-3%mn Alloy

Recrystallization generally occurs at low temperatures which results in significant change inmechanical properties of the metal. In the present work Al-3% Mn alloy is prepared andsubjected to plastic deformation to study the recrystallization behavior. After plasticdeformation stresses are induced which are relieved by heat treatment at 600 °C. Thespecimens are quenched after heat treatment so that alloy retains the same microstructure atroom temperature as it has at high temperatures. After quenching, the specimens aresubjected to recrystallization annealing at two different heat treatment temperatures (200° C& 500° C) for different holding times (5, 15, 30 & 60 minutes). The values of hardness (HRB&HRC) are calculated after recrystallization annealing for all the specimens