首页|Evolution of microstructure and texture of AZ61 Mg alloy during net-shape pressing of extruded perform
Evolution of microstructure and texture of AZ61 Mg alloy during net-shape pressing of extruded perform
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The micro orientation theological behavior of AZ61 Mg alloy during net-shape forming of tensile specimens via close-die pressing of extruded preformed and the effect of the press deformation rate on the microstructure characteristics were characterized with electron back-scattering diffraction (EBSD) orientation imaging microscopy and metallography.The results indicate that the intensity distribution of basal {0001}<10(1)0 > texture on the cross-section of the extruded perform is uniform and parallel to the extrusion direction.Subjected to pressing in extrusion direction,deformation shear stress leads to grain rotation and basal texture {0001}<10(1)0> deviation from the extrusion direction,spreading in the direction perpendicular to pressing direction.The texture intensity increases with the press deformation rate and reaches its peak value at 50%,which is considerably lower than the value reached in extrusion deformation.Then,the texture intensity decreases with the press deformation rate reversely.
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