Soviet Powder Metallurgy and Metal Ceramics

, Volume 11, Issue 2, pp 89–94 | Cite as

Changes in dimensions of porous metal fiber materials subjected to pressing and sintering

  • A. G. Kostornov
  • V. V. Skorokhod
  • M. S. Shevchuk
Theory and Technology of the Component Formation Process
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Conclusions

  1. 1.

    During pressing and sintering, high-porosity materials from metal fibers exhibit dimensional changes induced by residual stress relaxation, which may attain several tenths.

     
  2. 2.

    The total strain observed, which exceeds the purely elastic strain of a porous fiber material by one order of magnitude or more, is associated with the structural characteristics of the material.

     
  3. 3.

    To suppressthe undesirable material “growth” phenomenon occurring during sintering as a result of residual stress relaxation, a two-stage heat treatment may be employed.

     

Keywords

Heat Treatment Residual Stress Structural Characteristic Stress Relaxation Elastic Strain 

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Literature cited

  1. 1.
    M. Yu. Bal'shin, M. K. Rybal'chenko, et al., Poroshkovaya Met., No. 3, (1964).Google Scholar
  2. 2.
    M. Yu. Bal'shin and N. V. Manukyan, Transactions of the Fifth Republican Scientific-Technical Seminar on Sintered Materials and Components [in Russian], Erevan (1969).Google Scholar
  3. 3.
    A. G. Kostornov, I. M. Fedorchenko, et al., Poroshkovaya Met., No. 1 (1972).Google Scholar
  4. 4.
    V. V. Skorokhod, Poroshkovaya Met., No. 6 (1967).Google Scholar
  5. 5.
    L. Sokol, Powder Met.,8, No. 15, 114 (1965).Google Scholar
  6. 6.
    L. D. Landau and E. M. Lifshits, Theory of Elasticity [in Russian], Nauka, Moscow (1965).Google Scholar

Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • A. G. Kostornov
    • 1
  • V. V. Skorokhod
    • 1
  • M. S. Shevchuk
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine

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