Finite-element modeling of pure magnesium swaging

Acta Metall Sin

2006, Vol. 42

Issue (4): 394-398 DOI:

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Finite-element modeling of pure magnesium swaging

Li Rong;;

北京工业大学材料科学与工程学院

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Li Rong. Finite-element modeling of pure magnesium swaging. Acta Metall Sin, 2006, 42(4): 394-398 .

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Abstract Abstract: A general finite-element software program, Marc/Mentat, has been used to develop a coupled thermo-mechanical model of rotary swaging process of pure magnesium. Distributions and transitions of stress and strain are clarified and the critical conditions predicting two deformation defects are obtained. The deformation zone can be divided into three parts: Ⅰis the bulging head-end, Ⅱthe formed zone and Ⅲ the reduction zone. In the formed zone, the equivalent strain distributes inhomogeneously along the radial direction. The equivalent strain in the center is not more than half of that at the edge. The critical conditions preventing insufficient forging and edge-crack are εc≥ε0,εe<εb, respectively. The residual stresses are between 18MPa and 30MPa. Temperature-rising owing to the heat translateded from plastic deformation energy is not notable.

Key words: rotary swaging magnesium finite element analysis deformation behavior

Received: 08 August 2005

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