A study on Deformation and Densification characteristics of P/M Fe-C-Mn alloy Steels under cold upset

Abstract The present investigation has been undertaken to study the deformation and densification characteristics of Mn added P/M plain carbon steel. Cold upsetting was carried out on the sintered preforms of Fe-0.2%C, Fe-0.2%C-0.5%Mn, Fe-0.2%C-2.0%Mn low alloy steels using flat dies. Dimensional changes of the preforms after uniform incremental loads were accurately measured and the density was also evaluated. Further, the photomicrographs of the alloy steels reveal that addition of Mn leads to the formation of undissolved carbides in the grain structure. Increased Mn content leads to work hardening effect during cold deformation thereby reducing the deformation as well as densification.