Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 16740–16747 www.materialstoday.com/proceedings 2214-7853 © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Advanced Materials (SCICON ‘16). SCICON 2016 A study on Deformation and Densification characteristics of P/M Fe-C-Mn alloy Steels under cold upset J.T.Vishnuraj a *, T. K. Kandavel b , I. Sai Kishan a , G. Akash a a M.Tech (Integ.) students , School of Mechanical Engineering, Shanmugha Arts, Science, Technology and Research Academy (SASTRA University), Thanjavur, Tamil Nadu 613 401, India b Senior Assistant Professor, School of Mechanical Engineering, Shanmugha Arts, Science, Technology and Research Academy (SASTRA University), Thanjavur, Tamil Nadu 613 401, India 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. © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Advanced Materials (SCICON ‘16). Keywords: Powder metallurgy; Sintering; Deformation; Densification; Plain carbon steel; cold upsetting 1. Introduction The built-in porosity in pressed and sintered products is one of the key factors causing reduction in mechanical properties of P/M alloys. The final density of the sintered P/M parts plays an important role in determining the properties and characteristics of the components. In order to improve the density of sintered products, additional post-sintering operation may be carried out on the preforms. Processes such as cold forging, extrusion and cold and * Corresponding author. Tel.: +91-9894126767; fax: +95 04362 264120. E-mail address: vishnurajjt@gmail.com