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Soviet Powder Metallurgy and Metal Ceramics

, Volume 7, Issue 3, pp 169–174 | Cite as

Influence of the degree of particle deformation in a pressed compact on grain growth during heating

  • R. Z. Vlasyuk
  • I. D. Radomysel'skii
Theory and Technology of Sintering, Thermal, and Chemicothermal Treatment Processes
  • 12 Downloads

Conclusions

  1. 1.

    An investigation has been conducted into the influence of the degree of particle deformation in pressed compacts on the grain-growth process during subsequent heating. It is demonstrated that higher compaction pressure promotes a reduction in grain size when the compact is held for a short time at the required temperature.

     
  2. 2.

    The inhibiting effect of the pores on the grain-growth process has been confirmed once again.

     
  3. 3.

    A study was made of grain growth in porous compacts during isothermal holding. It is shown that the crystalline grains in compacts with 10% of pores have a greater capacity for growth in the course of time than the grains in compacts with 20% of pores.

     
  4. 4.

    A comparison has been made of grain growth in a pressed compact and in a compact re-pressed under the same pressure. It is demonstrated that interfacial boundaries between the powder particles provide additional recrystallization centers.

     
  5. 5.

    The influence of nonuniform pressure distribution in the pressed compacts on grain growth during subsequent heating has been established.

     

Keywords

Grain Size Recrystallization Compaction Pressure Distribution Powder Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. 1.
    M. O. Kornfeld, Phys. Z. d. Sowjetunion,7, 432, 1935 (1942).Google Scholar
  2. 2.
    Phys. Z. d. Sowjetunion,6, 537 (1934).Google Scholar
  3. 3.
    A. E. Von Arkel and M. G. V. Braggen, Z. für Physik,42, 795 (1927).Google Scholar
  4. 4.
    A. A. Bochvar, Metal Science [in Russian], Metallurgizdat (1945).Google Scholar
  5. 5.
    M. Yu. Bal'shin, Powder Metal Science [in Russian], Metallurgizdat (1948).Google Scholar
  6. 6.
    W. D. Jones, Fundamental Principles of Powder Metallurgy, Edward Arnold (Publishers) (1965).Google Scholar
  7. 7.
    Symposium on Powder Metallurgy (1964).Google Scholar
  8. 8.
    Men Scient Rew. Metallurgie, No. 3 (1966).Google Scholar
  9. 9.
    R. A. Andrievskii and I. M. Fedorchenko, Inzh-Fiz. Zh.,3, No. 3 (1960).Google Scholar
  10. 10.
    S. A. Saltykov, Stereometric Metallography [in Russian], Metallurgizdat (1958).Google Scholar
  11. 11.
    Ya. S. Umanskii et al., Physical Metallurgy [in Russian], Metallurgizdat (1955).Google Scholar
  12. 12.
    A. Gulyaev, Metal Science [in Russian], Oborongiz (1951).Google Scholar

Copyright information

© Consultants Bureau 1968

Authors and Affiliations

  • R. Z. Vlasyuk
    • 1
  • I. D. Radomysel'skii
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine

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