The Formablity of AZ31B Magnesium Alloy Sheet

摘要

The forming limit diagrams ( FLD) of AZ31B magnesium, alloy sheet were tested by means of the electro etching grid method based on the forming experiment of magnesium alloy sheet carried out with a BCS-30 D sheet forming testing machine and the strain testing analysis made with an advanced ASAME automatic strain measuring system.. Experiments show that, at room temperature , the mechanical properties and deep drawing performance of AZ31B cold-rolled magnesium alloy sheet were so poor that it failed to lest the forming limit diagrams without an ideal forming and processing capacity, while the hoi-rolled magnesium alloy sheet was of a little better plasticity and forming performance after testing its forming limit diagrams . It can be concluded that the testing of the forming limit curves ( FLC) offers the theoretical foundation for the drawing of the deep drawing and forming process of magnesium alloy sheet.