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Influence of carbon content on densification behaviour in forming of sintered plain carbon steel preforms

Narayan, Sumesh and Ananthanarayanan, Rajeshkannan (2011) Influence of carbon content on densification behaviour in forming of sintered plain carbon steel preforms. International Journal of Advanced Manufacturing Technology, 225 (7). pp. 1141-1151. ISSN 0268-3768

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Complete experimental investigation on the deformation and densification behaviour of sintered plain carbon steel cylindrical preforms with carbon contents of 0%, 0.35%, 0.75% and 1.1%, under cold upsetting, have been studied in order to understand the influence of various forming parameters such as true axial strain, flow stress, Poisson’s ratio, forming limits and formability stress index on the densification process. The abovementioned powder metallurgy sintered preforms with constant initial theoretical density of 0.84% and aspect ratio of 0.4 were prepared using a suitable die–set assembly on a 1 MN capacity hydraulic press and sintered for 90 minutes at 1200 oC. Each sintered preform was cold upset under two different frictional constraints, namely, nil/no and graphite lubricant condition. Densification-true strain and fracture strain-carbon content relationship was established and presented in this work. Further, attained density is considered to establish flow stress and formability stress index behaviour. The present work provides a guideline for producing P/M components free from open surface pores.

Item Type: Journal Article
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User: Sumesh Narayan
Date Deposited: 26 Mar 2015 00:17
Last Modified: 11 Sep 2015 03:41

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