Investigation of Anisotropic Properties of Al 5052 Alloy Deformed by Cryorolling and Cryo-cross Rolling

In present work, the effect of cryorolling (CR) and cryo-cross rolling (CCR) on mechanical behavior of Al 5052 alloy, such as tensile and anisotropic behavior, and the corresponding microstructural evolution were explored in detail. The uniaxial tensile testing was performed on Al 5052 alloy samples for all sample conditions, and the anisotropic properties (mechanical anisotropy and planar anisotropy) were examined for deformed Al 5052 alloy. The measured anisotropic properties values were then compared for solution-treated samples (base material), CR and CCR processed samples. The result clearly indicates that the anisotropic properties of CCR processed samples show much improvement compared to CR processed samples. The microstructural features of processed Al 5052 alloy were characterized by optical microscopy, scanning electron microscopy (SEM), and electron backscattered diffraction (EBSD). Both CR and CCR deformed texture of Al5052 was conquered by the mixture of copper and brass that results the deformation texture had a considerably effects on their recrystallization behavior. The presence of high density second phase particle in the region of fine grains amended the anisotropic properties of CCR processed samples can be attributed to the existence of bimodal microstructure due to the formation of ultrafine grains as well as the coarse grain structure in Al 5052 alloy.