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Deformation behaviour of sintered silicon–copper steel preforms of various aspect ratios during cold upsetting

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Abstract

Present investigation pertains to analyse some aspect on the cold deformation behaviour of sintered silicon–copper steel preforms. The well-established phenomenon for raising the density in the powder metallurgy preform is to induce the extended strain. An attempt has been made to understand the attained densification as a function of new strain parameter \( {e^{{\varepsilon_z} - {\varepsilon_\theta }}} \), which results in a power law relationship. Further interest has shown to compare the conventional plastic Poisson’s ratio to instantaneous Poisson’s ratio, for which theoretical description were also made. This analysis shows some marginal difference between them; however, its characteristic nature is unique. In addition, various stresses that influence the deformation behaviour are also studied with respect to the induced axial strain.

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Authors and Affiliations

  1. Division of Mechanical & Manufacturing Engineering, The University of the South Pacific, Laucala Campus, Suva, Fiji

    Rajeshkannan Ananthanarayanan

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  1. Rajeshkannan Ananthanarayanan
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Correspondence to Rajeshkannan Ananthanarayanan.

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Ananthanarayanan, R. Deformation behaviour of sintered silicon–copper steel preforms of various aspect ratios during cold upsetting. Int J Adv Manuf Technol 50, 509–515 (2010). https://doi.org/10.1007/s00170-010-2544-3

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  • DOI: https://doi.org/10.1007/s00170-010-2544-3

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