Hot Compression Deformation Behavior of AZ41M Magnesium Alloy

The hot compression deformation behavior of Mg-4Al-1Zn-0.5Mn-0.5Ca (AZ41M) alloys during twin roll casting and hot compression (350-400 oC/0.1-1s-1) has been studied. Owing to adding Mn and Ca in AZ41 alloy, the deformation behavior and microstructure exhibit largely changes under different conditions. A bimodal structure consisting of a large fraction of deformed grains and a small fraction of newly formed grains are found in as-deformed alloys. Equiaxed and fine-grained microstructures occur in as-annealed samples. Al-Mn and Al-Ca compounds result in grain and Al-Mg intermetallic refinement.