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Influence of Carbon Content on Strain Hardening Behaviour of Sintered Plain Carbon Steel Preforms

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Abstract

Complete experimental investigation on the instantaneous strain hardening behaviour of powder metallurgy (P/M) preforms of pure iron, Fe-0. 35%C, Fe-0. 75%C and Fe-1. 1%C was carried out. The strain hardening behaviour of the above-mentioned P/M sintered steel preforms with aspect ratio of 0. 4 under triaxial stress state condition was determined by cold upsetting under nil/no and graphite lubricant conditions. The instantaneous strain hardening value (ni), strength coefficient (Ki), and the stress as a function of strain and densification were obtained and analyzed. Furthermore, a relation was obtained from a semi-log plot of stress against relative density and analyzed to study the hardening behaviour owing to densification as stress was a function of induced strain as well as densification in the P/M materials.

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Authors and Affiliations

  1. Mechanical Engineering, The University of the South Pacific, Laucala Campus, Suva, 1168, Fiji

    S. Narayan (Master, Assistant Lectureship) & A. Rajeshkannan

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  1. S. Narayan
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  2. A. Rajeshkannan
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Correspondence to S. Narayan.

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Narayan, S., Rajeshkannan, A. Influence of Carbon Content on Strain Hardening Behaviour of Sintered Plain Carbon Steel Preforms. J. Iron Steel Res. Int. 18, 33–40 (2011). https://doi.org/10.1016/S1006-706X(12)60031-4

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  • DOI: https://doi.org/10.1016/S1006-706X(12)60031-4

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