Finite element micromechanical modeling of aluminium magnesium alloy during plastic deformation

Mohammed Rozi , Hamid (2013) Finite element micromechanical modeling of aluminium magnesium alloy during plastic deformation. Project Report. UTeM. (Submitted)

Text FINITE ELEMENT MICROMECHANICAL MODELING OF ALUMINIUM MAGNESIUM ALLOY DURING PLASTIC DEFORMATION 24pages.pdf Download (4MB)

Abstract

Work-hardening wrought Al-Mg alloys are also known commercially as the 5000 series aluminium-based alloys are currently being used as automotive body in white (BIW) material. Magnesium is the principle alloying element and is added for solid-solution strengthening. Since mechanical properties of aluminium magnesium alloy is affected by its microstructure, so it is important to know the behavior of each phase under plastic condition. This project is focused on the micromechanical modeling of aluminium magnesium alloy during plastic deformation using finite element analysis. Grain size of aluminium matrix and the size of intermetallic particles were determined by metallographic examination and SEM microscope. Geometric model was then built to represent the rnicrostructure and Finite Element Method will be applied to conduct numerical analysis. The method used for this study is by using Ansys software. To perform the simulation of the micromechanical modeling, the boundary condition and the constraints have been determined before run the simulation. Result shows that aluminium magnesium alloy 5083 has a higher strength and far better than the pure aluminium. This is because the existence of intermetallic particles as a strengthening element improves the properties of the aluminium. On the other hand, the existence of the intermetallic particles also leads to disadvantage to the alloy structure. The results show that the contact between the intermetallic particle and the aluminium matrix is the area where stress concentration happened that possibly lead to fracture.

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