Extrusion Limit Diagram of Mg Alloy by Using Finite Element Method

Abstract:

In order to prevent the surface defect in the magnesium alloy extrusion process, it is important to set an appropriate process condition. The extrusion limit diagram is very useful to achieve the maximum extrusion speed without surface defect. In this study, the extrusion limit diagram for the magnesium alloy extrusion is constructed by using extrusion experiment and finite element analysis. For finite element analysis hot compression test is carried out to obtain the effective stress and stain curves according to the various strain rates and temperatures. The effectiveness of the constructed extrusion limit diagram is verified through the porthole extrusion experiment for producing the magnesium alloy bumper beam.

• Periodical: Key Engineering Materials (Volumes 622-623)
• Pages: 581-587
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.622-623.581
• Online since: September 2014
• Authors: Sang Kon Lee, Seong Yun Lee, In Kyu Lee, Myeong Sik Jeong*, Yong Jae Jo, Da Hye Kim, Jae Wook Lee, Kyung Hun Lee
• Keywords: Extrusion Experiment, Extrusion Limit Diagram, Finite Element Analysis (FEA), Magnesium Alloy

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