Soviet Powder Metallurgy and Metal Ceramics

, Volume 14, Issue 9, pp 753–756 | Cite as

Physicomechanical properties of volume-strained sintered porous nickel

II. Velocity of propagation of ultrasonic vibrations
  • I. F. Martynova
  • V. V. Skorokhod
  • S. M. Solonin
  • G. R. Fridman
Test Methods and Properties of Materials

Conclusions

  1. 1.

    Measurement of the velocity of propagation of longitudinal USV in sintered solids offers a highly sensitive means of detecting contact imperfections and artificial defects and also of examining their healing during sintering.

     
  2. 2.

    An evaluation of macrodefect concentrations based on ultrasound-velocity measurements established that cold healing of defects is possible at high repressing pressures.

     
  3. 3.

    Ultrasound velocity measurements revealed an appreciable anisotropy of macrodefects forming during sintering and re-pressing in porous nickel sintered with a volatile pore-forming agent.

     

Keywords

Nickel Anisotropy Velocity Measurement Physicomechanical Property Ultrasound Velocity 

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Literature cited

  1. 1.
    V. V. Skorokhod, M. Ya. Kutser, and G. R. Fridman, in: Advanced Production Techniques in Powder Metallurgy, Transactions of an All-Union Seminar [in Russian], Minsk (1974).Google Scholar
  2. 2.
    V. V. Skorokhod, Poroshkovaya Met., No. 1 (1961).Google Scholar
  3. 3.
    V. V. Skorokhod, Rheological Principles of Sintering Theory [in Russian], Naukova Dumka, Kiev (1972).Google Scholar
  4. 4.
    R. Morlier, Mém. Sci. Rev. Met.,67, No. 6 (1970).Google Scholar
  5. 5.
    Brockelman, Metal Progr., No. 1, 90 (1966).Google Scholar

Copyright information

© Plenum Publishing Corporation 1976

Authors and Affiliations

  • I. F. Martynova
    • 1
    • 2
  • V. V. Skorokhod
    • 1
    • 2
  • S. M. Solonin
    • 1
    • 2
  • G. R. Fridman
    • 1
    • 2
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine
  2. 2.Scientific-Research Institute of Powder MetallurgyBelorussian Polytechnic InstituteBelarus

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