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Study on deformation behavior and strain homogeneity during cyclic extrusion and compression

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Abstract

In this paper, the plastic deformation behavior and strain homogeneity of the ZK60 Mg alloy during the multi-pass cyclic extrusion and compression (CEC) was simulated using the finite-element method (FEM) with a view to provide an insight into the mechanics of the process. Physical modeling (PM) experiment with same alloy was carried out to verify the results of the numerical simulations. The results show that two vortex flow regions with opposite flow direction are formed inside the cylindrical workpiece during CEC deformation. Although the deformation is inhomogeneous in both end regions of workpiece, a uniform region of equivalent strain exists, and the extent of uniform deformation increased with the increase in workpiece length.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 50674067), National Basic Research Program of China (No. 2007CB613701) and Program of Shanghai Subject Chief Scientist (No. 08XD14020). Special thanks to Snorre Kjørstad Fjeldbo for useful comments on the manuscript.

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Authors and Affiliations

  1. National Engineering Research Center for Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, 200240, China

    Jinbao Lin, Qudong Wang & Liming Peng

  2. School of Applied Science, Taiyuan University of Science and Technology, Taiyuan, 030024, China

    Jinbao Lin

  3. Department of Materials Science and Engineering, The Norwegian University of Science and Technology, 7491, Trondheim, Norway

    Hans J. Roven

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  1. Jinbao Lin
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  2. Qudong Wang
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  3. Liming Peng
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Correspondence to Jinbao Lin.

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Lin, J., Wang, Q., Peng, L. et al. Study on deformation behavior and strain homogeneity during cyclic extrusion and compression. J Mater Sci 43, 6920–6924 (2008). https://doi.org/10.1007/s10853-008-2994-2

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  • DOI: https://doi.org/10.1007/s10853-008-2994-2

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