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Thermofluctuational Fracture Mechanism in Solids in the Presence of an Active Medium

  • I. B. Chepkov
  • S. V. Lapitskii
  • A. V. Gurnovich
  • A. A. Maistrenko
  • B. A. Oliyarnik
  • A. V. KuchinskiiEmail author
Article
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The paper addresses an approach to the physical notion of failure of solids in the presence of an active medium (a destructive compound), which is based on two successive steps. The first one is to go from considering a body as an elastic or viscoelastic continuum to studying it as an atomic-molecular system. The second step that follows the investigation of the atomic structure is to take into account the influence of atomic motion in a solid during the study of mechanical properties of solids (at high temperatures, in a wide range of loading speeds, under cyclic and vibrational loads), which is based on the experimental data on ultimate strength and yield stress of metals. A mechanism of crack initiation in a loaded metal under the action of destructive compounds is discussed. The capillary and diffusional propagation of a molten liquid-metal compound along grain boundaries and structural defects in a solid metal in combination with the viscous flow of the melt over its surface are shown to dictate the crack propagation into metal structure. The pattern of the affecting destructive factor has been clarified.

Keywords

strength yield liquid-metal compound capillary and diffusional penetration destruction 

References

  1. 1.
    C. Roques-Carmes, M. Aucouturier, and P. Lacombe, “The influence of testing temperature and thermal history on the intergranular embrittlement and penetration of aluminium by liquid gallium,” Met. Sci., 7, No. 1, 128–132 (1973).CrossRefGoogle Scholar
  2. 2.
    V. R. Regel’, A. I. Slutsker, and E. E. Tomashevskii, Kinetic Nature of Strength of Solid Bodies [in Russian], Moscow, Nauka (1974).Google Scholar
  3. 3.
    R. M. Latanision and J. R. Pickens (Eds.), Atomistics of Fracture, Plenum Press, New York (1983).Google Scholar
  4. 4.
    G. V. Ukraintsev, “Methodology of structure survivability assessment based on strength conditions,” Tr. TsAGI (1976).Google Scholar
  5. 5.
    S. N. Zhukov, V. I. Betekhtin, A. I. Petrov, “On the relation between the strength of metals and the disordering of blocks and sizes of crystals,” Fiz. Metal. Metalloved., 23, 1101–1107 (1967).Google Scholar
  6. 6.
    S. N. Zhurkov, “A kinetic concept of strength of solid bodies,” Vestn. AN SSSR, No. 3, 46–52 (1968).Google Scholar
  7. 7.
    F. A. Baum, L. P. Orlenko, and K. P. Stanyukevich, Physics of Explosion [in Russian], Moscow, Nauka (1975).Google Scholar
  8. 8.
    V. I. Likhtman, E. D. Shchukin, and P. A. Rebinder, Physical-Chemical Mechanics of Metals [in Russian], Moscow, AN SSSR, Moscow (1962).Google Scholar
  9. 9.
    B. D. Summ and Yu. V. Goryunov, Physical-Chemical Background of Wetting and Spreading [in Russian], Khimiya, Moscow (1976).Google Scholar
  10. 10.
    V. I. Vipirailo and E. I. Pakhomov, “Kinetics of DM propagation in a structural material,” KVZRIU, Issue 6, 17–23 (1988).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • I. B. Chepkov
    • 1
  • S. V. Lapitskii
    • 1
  • A. V. Gurnovich
    • 1
  • A. A. Maistrenko
    • 1
  • B. A. Oliyarnik
    • 2
  • A. V. Kuchinskii
    • 1
    Email author
  1. 1.Central Research Institute of Armament and Military Equipment of the Armed Forces of UkraineKievUkraine
  2. 2.Scientific Center of Hetman Petro Sahaidachnyi National Army AcademyLvovUkraine

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