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Crystal plasticity investigation of friction effect on texture evolution of Al single crystal during ECAP

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Abstract

A crystal plasticity finite element model has been developed to study the effect of friction between the die wall and the billet on texture evolution during equal channel angular pressing of an aluminum single crystal. Four cases with different coefficients of friction μ = 0, 0.05, 0.1, and 0.15 have been simulated. It has been found that the friction of μ = 0.05 and 0.1 can capture the major texture features shown in the experimental results, and μ = 0.05 predicts a slightly better texture than μ = 0.1. The frictional condition significantly affects texture evolution in the region between 1/2 and 3/4 of the billet thickness from the top surface. It can be attributed to the effect of friction on the corner gap and the distribution of stresses in the die corner.

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Acknowledgments

The authors acknowledge the financial support from an Australia Research Council Discovery Grant (DP0773329). G. Y. Deng and L. H. Su would like to thank the financial support from China Scholarship Council.

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Correspondence to C. Lu.

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Deng, G.Y., Lu, C., Tieu, A.K. et al. Crystal plasticity investigation of friction effect on texture evolution of Al single crystal during ECAP. J Mater Sci 45, 4711–4717 (2010). https://doi.org/10.1007/s10853-010-4674-2

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  • DOI: https://doi.org/10.1007/s10853-010-4674-2

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