Abstract
Warm forging is a metal forming operation which is used to obtain near net shaped components and is considered as a trade-off between cold and hot forging as optimum deformation load and temperature can be used for forging. In this present work, Al 6061-T6 alloy is selected and cylindrical billets were prepared for warm forging. Effect of homogenization on forgeability is also studied and thus half of the samples are homogenized at 550°C for 8 hours. The initial raw material and the homogenized samples are warm forged at two different temperatures i.e. 100°C and 150°C respectively. It is observed that all the samples are forgeable and no cracks are observed and thus all the samples are further analysed for its various parameters. Longitudinal contraction (ln (ho/hf)) and diametrical expansion (ln (do/df)) are calculated and their relationship is found to be rectilinear. Radius of curvature and maximum barrelling diameter is measured and their relationship proved that curvature of barrel follows the geometry of circular arc. New geometrical shape factor (NGSF) is also calculated for the samples.
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