Investigation of the Formability of Cryogenic Rolled AA6061 and Its Improvement Using Artificial Aging Treatment

Cryogenic rolling is one of the essential severe plastic deformation processes to manufacture high-strength aluminum sheets with excellent formability limits. The present work characterizes AA6061 for cryogenic before and after artificial aging. Nakajima method based on ISO standard used measure formability. Samples are aged in range 100 °C 150 °C. Artificial aging at found be optimum temperature achieving a good combination strength Over course aging, improved up 40%, where original value 250 MPa cryo-rolled condition increased 350 50 h °C, sample especially multi-axial forming condition.