Room Temperature Ductility and Microstructure of Magnesium AZ31B Sheet

Formability of wrought magnesium alloys at room temperature or slightly elevated temperatures is modest, reaching about 20% elongation in a tension test and exhibiting poor resistance to strain localization and failure. The hexagonal close packed structure of Mg has few active slip systems at lower forming temperatures, limiting ductility and reducing applications in auto body structures. Much greater levels of ductility can be reached at …