Effect of Forging Type on the Deformation Heterogeneities in Multi-Axial Diagonal Forged AA1100

The present study investigated the effects that different types of forging exert on the deformation heterogeneities developed in AA1100 during multi-axial diagonal forging. To measure the deformation heterogeneities of deformed workpieces, the values for hardness and Kernel average misorientation were measured at the center section following each forging process. Type-D forging that consists of diagonal forging and return-diagonal forging was relatively advantageous compared with Type-P forging that includes plane forging and return-plane forging for minimizing the non-uniformity of deformation developed in workpieces. The effective strain developed in a workpiece during the 2 types of forging was simulated using 3-D FEA. FEA revealed that the positions and degrees of occurrence for soft and hard-zones in workpieces vary greatly depending on the forging type. Type-D forging was relatively advantageous compared with Type-P forging for minimizing the non-uniformity of effective strain developed in workpieces.