Title: Hydrostatic extrusion of composite rods with hard cores
Abstract: The modes of deformation of composite materials with a hard core during hydrostatic extrusion are examined. The experimental work was carried out for Cu-Al composite rods with the fractional cross-sectional area of the copper being 0.16. It has been found that uniform deformation occurs at low extrusion ratios and the copper rod fails in tension at higher ratios; also the critical extrusion ratio increases as the die angle decreases. A theoretical analysis is developed to predict the mode of deformation by using the upper bound method. The effects of the end of the billet, yield stress ratio, fraction of the harder core, extrusion ratio, die angle and frictional shear factors at the interface and die surface are considered in the analysis. The theoretical results show good agreement with the experimental results.
Publication Year: 1973
Publication Date: 1973-04-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 95
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