Abstract
Microstructures and mechanical properties were investigated using Mg-9at.%Y-6at.%Zn alloy produced by several types of wrought-processing, i.e., forging, rolling, extrusion, equal-channel-angular extrusion, caliber rolling and high-pressure-torsion. Regardless of the wrought-processing method, deformation kink bands were induced to the long-periodic stacking ordered phase. Hardness increased with higher magnitude of applied strains. However, the inducing direction of shear strain affected the hardness values, and multiple shear strains were effective in improving the mechanical properties. For instance, the alloy produced by extrusion-torsion process exhibited yield strength in compression exceeding 600 MPa, which was over 1.7 times higher than that of the direct extruded alloy.
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