Homogenization and preheating of non heat treatable aluminium alloys

The strength characteristics of non heat treatable aluminium alloys (AlMn, AlMg) are formed by work hardening and softening (annealing) heat treatment. In case of the aluminium alloys the aim of homogenization is usually double, partly the increase of the formability during the plastic deformation, partly the achievement of high strength values. At the non heat treatable alloys the effect of homogenization is less in the forming of these characteristics, its role is to keep back the development of rough crystal structure and earing of deep drawbility materials.