An Analysis of the Tensile Deformation Behavior of Commercial Die-Cast Magnesium-Aluminum-Based Alloys

摘要: Magnesium and its alloys have a complex progression of deformation mechanisms due to the hexagonal closed-packed crystal structure. undergoes series different modes as stress increases. The behavior is marked by commencement elastic (Stage I), followed 〈a〉 basal slip twinning II), prismatic III) finally 〈c + a〉 pyramidal IV). In this study, range commercial die-cast magnesium-aluminum-based are analyzed. Four distinct stages strain hardening can be seen in tensile stress–strain curve these modeled according assumption that they correspond four mechanisms. It shown both Stages I III described linear equation while II IV follow power-law relationship fitted with Hollomon’s equation. A semi-empirical proposed model entire curve, which provides simple way understand magnesium points towards better methods modeling alloy part design.