Effect of the interfacial condition on the microtexture near the interface of Al/Cu composites during multi-pass caliber rolling

• Different interfacial conditions resulted in either fiber to shear-type texture transition or simple fiber type texture.
• Strong texture heterogeneity along bonded Al/Cu interface arises due to heterogeneous shear deformation.
• Frictional contact between Al/Cu resulted in fiber-type texture along the entire interface, but with difference in intensity.

The local microtexture developments of Cu near the interface of Al-core/Cu-sheath composites during multi-pass caliber rolling are investigated using the finite element method in conjunction with a visco-plastic self-consistent model. Two models with different interfacial conditions between Al and Cu are used in order to investigate the effect of the interfacial condition. The resulting inverse pole figures and difference in ODFs for the different numbers of caliber rolling passes indicate that the Coulomb frictional contact condition between Al and Cu represents the final microtextures better than the fully bonded interfacial condition.

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