Texture Formation by the Compression Deformation of AA5182 Aluminum Alloy at High Temperatures

Texture formation of AA5182 for compressive deformation with a range of temperatures -2 from 673K to 823K and strain rates from 5.0x10(-4) to 5.0x10(-2)s(-1) is experimentally investigated by EBSD technique and X-ray diffraction. Fiber textures are observed in all deformation conditions. Stress regions are divided into a low stress region (10 similar to 55MPa) and a high stress region (above 55MPa) on the basis of the relationship between stress and grain size. In the low stress region, it is found that the main component of the fiber texture is {001} (compression plane). In this case, the pole density at {001} is increased with increasing temperature at the same stress level. It is concluded that development of {001} component is attributed to grain boundary migration. For the high stress region, the main component of the fiber texture is {011}. It is considered that the formation of {011} component is attributed to the slip deformation by {111}< 110 > system.