Effects of forming rate and lubricant on the formability of aluminum alloy 5182–O sheet

Abstract

The formability is evaluated by a tensile test and several deep drawing tests. The tensile test of the sheet carried out at room temperature with strain rates ε=0.01 to 20 indicates that the elongation increases with increase in strain rates. It is also found that the elongation is strongly related to the occurrence of serration during the deformation. The press formability of the sheet is further evaluated by a circular cup deep-drawing test with various strain rates and lubricants. The effects of strain rate on the press formability and lubrication are classified and the proper press forming condition for the aluminum alloy is obtained.