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Irreversible deformation of a sintered porous body of work-hardening plastic metal

Part I

  • Test Methods and Properties of Materials
  • Published:
Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    An examination is made of two methods of describing the densification of a sintered porous body of a plastic metal during cold deformation with allowance for work-hardening: a) on the basis of the mechanics of plasticity, using a spherically symmetrical matrix model of a porous body; b) on the basis of rms viscous strains and stresses, using a statistical model of a porous body.

  2. 2.

    Analysis of formulas obtained for the relationship between pressure and the porosity of a sintered porous body for various types of stressed state with allowance for work-hardening of the metal shows that calculation based on mechanics of plasticity considerations yields higher values of stress needed for the attainment of a given porosity than does calculation with the aid of rms strains and stresses.

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Sciences of the Ukrainian SSR, Ukrain

    V. V. Skorokhod & I. F. Martynova

Authors
  1. V. V. Skorokhod
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  2. I. F. Martynova
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 4(172), pp. 70–74, April, 1977.

The authors wish to express their thanks to M. B. Shtern for helpful discussion and assistance with this work.

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Skorokhod, V.V., Martynova, I.F. Irreversible deformation of a sintered porous body of work-hardening plastic metal. Powder Metall Met Ceram 16, 295–298 (1977). https://doi.org/10.1007/BF00806134

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  • DOI: https://doi.org/10.1007/BF00806134

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