The flow behavior and associated structural changes of commercial wrought AZ31B-O alloy sheet deformed in tension were analyzed in this work. Tensile tests were conducted on a sheet with a thickness of 0.6 mm and an initial average grain size of 5.7 µm, a The flow behavior and associated structural changes of commercial wrought AZ31B-O alloy sheet deformed in tension were analyzed in this work. Tensile tests were conducted on a sheet with a thickness of 0.6 mm and an initial average grain size of 5.7 µm, a