Abstract
The effects of superplastic deformation (SPD) on grain structure and texture evolution of
the Al 2014–20%Al2O3 composite produced via powder metallurgical method were
investigated in conjunction with surface relief observations. Samples were deformed in
tension at different strains in the range of true strain rates 10-4–100 S-1 at temperature
500C. It was found that SPD strains have a large effect on both texture and grain size. At
the initial stage of superplastic flow, deformation bands are formed in the aluminum
matrix along the tension direction. Simultaneously, the initial