Warm formability and plastic anisotropy of AZ31B Mg sheets

摘要

Due to the limited ductility and the extensive springback at room temperature, warm forming is considered indispensable for the processing of Mg sheets. In this study, the warm formability of Mg sheets has been evaluated, having different fabricating routes such as strip cast and warm rolled, DC cast and extruded. A series of mechanical tests has been conducted to characterize the deformation behaviors of AZ31 sheets at elevated temperatures. Deep drawing tests have also been conducted using universal drawing machine equipped with an warm toolset. Transition of drawability and failure mode was investigated in terms of measured mechanical properties, i.e. plastic anisotropy.