Texture and Microstructure After Roll-Bonding of an Fe-Al Multilaminate

A 5-layer laminate composite was produced by roll-bonding at room temperature of a stacking of ARMCO steel and commercial purity aluminum alloy (AA1050). The large rolling draught led to heterogeneous deformation across the thickness of the layered aggregate, which was investigated using finite element modeling. The evolution of microstructure and crystallographic texture was probed using EBSD. Intense localized shear inside the AA1050 layers gave rise to continuous recrystallization, whereas a rolling texture developed in the adjacent iron layer. Both were reproduced using crystal plasticity modeling.