1302 Cold roll forming of AZ31 wrought magnesium alloy

Recently, the growing demand for light weight technology has been key issue because reducing CO2 emission has become a global challenge work. Magnesium alloys that are lighter than aluminum alloys have a specific gravity of 1.8, which is 2/3 of aluminum alloys. In recent several years, although production of magnesium has risen dramatically, production of magnesium alloy sheet remains still at a very low level. Utilizing cold roll forming for forming wrought magnesium alloys has the advantage of extending markets of magnesium alloys, also cold roll forming of the magnesium alloys has possibilities to manufacture structure materials such as pipes and V sections, C-channels. In the present study, magnesium alloy AZ31 as well as SPCC (cold rolled steel) have been cold roll formed. A desired shape of the product is a pipe with 14mm diameters. A 3D FEM analysis has been conducted to clalify the forming characteristics of AZ31 wrought magnesium alloy. The details of springback mechanism has been analysed in tames of bending strain.