Abstract
In the present study, the effect of twinning activity on thickness strain evolution in a rolled Mg alloy sheet was investigated both experimentally and numerically. An evolution of thickness strain and a twinning activity were examined during tension following compression. The decrease in thickness strain was more pronounced during the initial stage of tension than that during the latter stage. A result of crystal plasticity finite-element analysis showed that the difference in the evolution of thickness strain occurred because of the detwinning activity. More specifically, thickness strain in the initial stage of tension was induced by both slip and detwinning activities, whereas in the latter stage the effect of detwinning was negligible and thickness strain was induced solely by slip activity. The above results indicated that twinning can play a significant role in thickness strain evolution in a rolled Mg alloy sheet.
