Effect of severe plastic deformation on microstructure and mechanical properties of bulk AZ31 magnesium alloy
(1. School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China;
2. State Key Laboratory of Materials Processing and Die & Mould Technology,
Huazhong University of Science and Technology, Wuhan 430074, China)
2. State Key Laboratory of Materials Processing and Die & Mould Technology,
Huazhong University of Science and Technology, Wuhan 430074, China)
Abstract: The equal channel angular pressing (ECAP) was used to make large plastic deformation of magnesium alloy, and ECAP processing and relevant process parameters were obtained by using finite element method. The strain distributions in the workpieces and the loads on the dies were studied. The mathematical model of accumulated deformation results, microstructure refinement and mechanical properties were established. Through the analysis, the relationships between grain refinement and mechanical properties were obtained. The refined grain size and the obtained mechanical properties are forecasted by using characterization of accumulation deformation.
Key words: magnesium alloy; AZ31 alloy; equal channel angular pressing; process parameter; grain refinement