Abstract
Detailed finite element simulations in conjunction with experimental analysis of cold pilger processing were carried out to investigate the deformation behavior of an AISI321 austenitic stainless steel. The effects of process parameters such as feed rate and turn angle on damage buildup were also evaluated. By considering compressive stresses, a new revised Latham–Cockcraft damage factor was obtained as an indicator value for the determination of the optimum conditions. It was found that the radial and hoop strains in all friction conditions were compressive, while the axial strains were observed to be tensile. The amount of strain was also higher on the outside of the tube, as compared to the inner one. By considering fatigue cycles of a tube element during the process, the feed rate of 8 mm, turn angle of 60° and the lowest coefficient of friction with the minimum damage value were determined as an optimum condition.
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