Abstract
Repetitive upsetting-extrusion (RUE) that was originally invented to process powder materials for bulk mechanical alloying is currently being used to process bulk materials. Bulk materials are subjected to severe plastic deformation using the same die design that was used to process powder materials. As the deformation behaviour of powder and bulk materials are quite different, it has to be evaluated whether a single die design is suitable to process both these materials. Further, information on the deformation behaviour and strain homogeneity that can be achieved by subjecting bulk materials to RUE process are also currently not available. To address these issues, both numerical analysis and actual experiments on commercial pure copper has been carried out. The results obtained are presented and discussed here
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Acknowledgement
The authors express their gratitude to Dr. G. Malakondaiah, Director, Defence Metallurgical Research Laboratory (DMRL) for encouraging us to publish this work. The authors acknowledge the support rendered by M. Sudhakara Rao, NNSG, DMRL in preparing the RUE die. Authors acknowledge the funding provided by Defence Research and Development Organisation (DRDO) to carry out the work.
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Balasundar, I., Raghu, T. Deformation behaviour of bulk materials during repetitive upsetting-extrusion (RUE). Int J Mater Form 3, 267–278 (2010). https://doi.org/10.1007/s12289-010-0683-6
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DOI: https://doi.org/10.1007/s12289-010-0683-6