Abstract
The effects of performing three twist extrusion passes on high purity aluminum samples were studied in this paper in regard to numerical analysis and experimental studies. The finite element analysis of the von-Mises stress and the equivalent plastic strain in the outer longitudinal and transverse cross-sections, which are parallel and normal to the billet axis respectively, was carried out. The simulation results showed that the end of the workpiece underwent more equivalent plastic strains in contrast to the head of the sample. Moreover, the corner regions experienced more strains than the center zone did. However, the heterogeneity in strain distribution in both longitudinal and transverse cross-sections decreased by performing the sequential twist extrusion passes. The experimental outcomes such as microstructure evolutions, microhardness and tensile tests validated the simulation results.
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Asghar, S.A., Mousavi, A. & Bahador, S.R. Investigation and numerical analysis of strain distribution in the twist extrusion of pure aluminum. JOM 63, 69–76 (2011). https://doi.org/10.1007/s11837-011-0032-3
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DOI: https://doi.org/10.1007/s11837-011-0032-3