Optimization of deep drawing process forming parameters for magnesium alloys

Victor B. Watiti, George N. Labeas

Laboratory of Technology and Strength of Materials, Faculty of Mechanical and Aeronautical,Engineering, School of Engineering, University of Patras,Panepistimioupolis Rion, 265 00 Patras, Greece.

DOI:

https://doi.org/10.7494/cmms.2010.2.0284

Abstract:

Formability of Magnesium alloys is limited especially at room temperature due to their hexagonal close packed (HCP) structure. At room temperature (RT), the critical resolved shear stress for non basal slip systems is much greater than those for basal slips. As only basal systems may contribute to plastic deformation, magnesium alloys have limited formability at RT. However, increased formability is observed at higher temperatures ranging between 150oC and 300oC due to the activation of additional slip planes. Additionally, it has been observed that the formability is very sensitive to strain rates. In this paper experimental methods and Finite Element (FE) analysis are applied for the development of a methodology based on strain energy density theory for determination of the forming limits of magnesium alloys AZ31 and WE43. Based on the developed methodology optimal forming parameters in a deep drawing forming process, namely punch radius, temperature, profile radius and forming depth, are determined.

Cite as:

Watiti, V., & Labeas, G. (2010). Optimization of deep drawing process forming parameters for magnesium alloys. Computer Methods in Materials Science, 10(2), 87 – 96. https://doi.org/10.7494/cmms.2010.2.0284

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