On the die design for Repetitive Upsetting – Extrusion (RUE) process
Source abstract
Abstract
Though the capability of Repetitive Upsetting- Extrusion (RUE) process to produce ultrafine grains in a bulk aluminium alloy has been established, a detailed description on the material flow, deformation homogeneity and the die design requirements to process bulk materials has never been addressed. To address these issues commercial pure copper (CP Cu) was subjected up to four cycles of RUE using the die design that has been used by various researchers. The RUE processed CP Cu samples when subjected to macrostructure and microstructure evaluation revealed that apart from inhomogeneous deformation, defects such as axial hole/funnel and folds/laps were induced in the processed samples. The formation of these defects during RUE is attributed to the current die design. Based on a recent study carried out on the extrusion defect – axial hole/funnel, a modified RUE die design has been proposed. CP Cu subjected to RUE using the modified die design revealed that the modified die design not only helps in avoiding the defects but also improves the homogeneity.
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Research context
OpenAlex topics: Microstructure and mechanical properties · Aluminum Alloy Microstructure Properties · Metallurgy and Material Forming
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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