Strength of Materials

, Volume 31, Issue 5, pp 459–466 | Cite as

Standardization of the strength of metals under conditions of low-temperature instability of plastic deformation and the action of strong magnetic fields

  • E. V. Vorob'ev
  • V. A. Strizhalo
Scientific and Technical Section
Received:

Abstract

We propose an approach to determination of allowable stresses by a static-strength criterion for materials of structures that operate at very low temperatures (T≤20 K). This approach takes into account the qualitative change in the nature of deformation of the material, which has a significant effect on the mechanical characteristics and the specific work of deformation. The choice of critical stresses for these conditions is substantiated. The calculations are performed by introducing corrections for low-temperature hardening of the material in the presence of the intermittent-flow effect. We discuss the possibility of taking into account the influence of strong magnetic fields on the magnitude of allowable stresses.

Keywords

Critical Stress Austenitic Steel Strong Magnetic Field Cryogenic Temperature Allowable Stress 
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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References

  1. 1.
    N. V. Novikov, A. L. Maistrenko, and A. N. Ul'yanenko,Structural Strength at Low Temperatures [in Russian], Naukova Dumka, Kiev (1979).Google Scholar
  2. 2.
    V. A. Strizhalo, N. V. Filin, B. A. Kuranov, et al.,Strength of Materials and Structures at Cryogenic Temperatures [in Russian], Naukova Dumka, Kiev (1988).Google Scholar
  3. 3.
    G. S. Pisarenko and V. A. Strizhalo, “The influence of very low temperatures on the deformation behavior of structural alloys and on the choice of allowable stresses,” in:Strength of Materials and Structures at Low Temperatures [in Russian], Naukova Dumka, Kiev (1984), pp. 3–12Google Scholar
  4. 4.
    RTM 56-60. Vessels and Apparatuses. Methods of Design Calculation of Elements and Assembly Units of Metals That Are Ductile under Operating Conditions [in Russian], Adopted on October 1, 1969.Google Scholar
  5. 5.
    OST 26-04-2585-86. Cryogenic and Cryogenic-Vacuum Engineering. Vessels and Chambers. Standards and Methods of Calculation of the Strength Stiffness, and Service Life of Welded Structures [in Russian], Adopted July 1, 1986.Google Scholar
  6. 6.
    B. A. Kuranov, A. A. Lebedev, N. V. Novikov, and V. A. Strizhalo, “On creating a standard on calculations of the strength stiffness, and service life of thin-walled shell structures in cryogenic engineering,”Probl. Prochn., No. 1, 98–101 (1983).Google Scholar
  7. 7.
    DSTU 2464-94. Strength Calculation and Testing. Methods of Determination of Equivalent and Allowable Stresses under Static Loading [in Ukrainian], Valid as of January 1, 1995.Google Scholar
  8. 8.
    É. V. Chechin, “Savings in ductile materials due to a changeover from a force-based method of determination of allowable stresses to an energy-based one,”Probl. Prochn., No. 3, 52–62 (19996).Google Scholar
  9. 9.
    Z. S. Basinski, “The instability of plastic flow of metals at very low temperatures”,Proc. Roy. Soc.,A-240, 229–242 (1957).Google Scholar
  10. 10.
    D. A. Wigley,Mechanical Properties of Materials at Low Temperatures, Plenum Press, New York, London (1971).Google Scholar
  11. 11.
    V. I. Startsev, V. Ya. Il'ichev and V. V. Pustovalov,Plasticity and Strength of Metals at Low Temperatures [in Russian], Metallurigya, Moscow (1975).Google Scholar
  12. 12.
    V. A. Strizhalo and E. V. Vorob'ev, “Low-temperature intermittent flow of structural alloys,”Probl. Prochn., No. 8, 37–46 (1993).Google Scholar
  13. 13.
    V. A. Strizhalo and E. V. Vorob'ev, “Low-temperature intermittent flow of hardenable materials,”Probl. Prochm., No. 10, 3–8 (1994).Google Scholar
  14. 14.
    V. A. Strizhalo, E. V. Vorob'ev, and L. S. Novogrudskii, “The influence of prestrain on the intermittent flow of materials at a temperature of 4.2 K,”Probl. Prochn., No. 8, 12–20 (1995).Google Scholar
  15. 15.
    E. V. Vorob'ev and V. A. Strizhalo, “Development of low-temperature stepwise deformation of metals and ways of preventing it,”Probl. Prochn., No. 1, 41–52 (1999).Google Scholar
  16. 16.
    G. A. Malygin, “Heating up of slip lines and bands in fine crystals at low temperatures,”Fiz. Metal. Metalloved.,20, Issue 9, 2825–2827 (1978).Google Scholar
  17. 17.
    G. A. Malygin, “Thermal mechanism of the instability of deformation of metals at low temperatures,”Fiz. Metal. Metalloved.,65, Issue 5, 864–874 (1987).Google Scholar
  18. 18.
    V. Ya. Il'ichev, I. N. Nechiporenko, and I. A. Shapovalov, “The influence of the strain rate on the mechanical and plastic properties of some stainless steels at low temperatures,”Ukr. Fiz. Zhurn.,29, Issue 6, 907–915 (1984).Google Scholar
  19. 19.
    V. A. Strizhalo, V. Yu. Bugaev, and I. I. Medved' “The influence of the strain rate on the behavior of structural alloys under static tensile loading at very low temperatures,”Probl. Prochn., No. 1, 3–8 (1990).Google Scholar
  20. 20.
    V. G. Smirnov and Yu. P. Solntsev, “The influence of the strain rate on the heating-up of specimens of titanium alloy in static tests at temperatures of 293 to 4.2 K,”Probl. Prochn. No. 12, 70–78 (1992).Google Scholar
  21. 21.
    V. A. Strizhalo V. Yu. Bugaev, and I. I. Medved' “The influence of the scale factor on the special features of deformation of structural alloys in static tension at very low temperatures (4.2 K),”Probl. Prochn. No. 5, 61–66 (1990).Google Scholar
  22. 22.
    V. A. Strizhalo, L. S. Novogrudskii, and E. V. Vorob'ev, “On the development of the interstate standard ‘Metals. Method of Tensile Testing at Temperatures of 293 to 4.2 K’” in:Urgent Problems of Mechanics, Strength, and Thermal Conductivity at Low Temperatures (IV Scientific and Technical Seminar). Abstracts of Papers [in Russian], International Academy of Cold, St. Petersburg (1998), pp. 10–11.Google Scholar
  23. 23.
    E. V. Vorob'ev, “On the relationship between the intermittent flow and the mechanical characteristics of cryogenic-engineering alloys,” in:Strength of Materials and Structures at Low Temperatures (III All-Union Conference). Abstracts of Papers [in Russian], Kiev (1991), pp. 11–12.Google Scholar
  24. 24.
    T. Blewitt, R. Coltman, and J. Redman, “Dislocations and mechanical properties of crystals,” in:Held at Lake Placid (Intern. Conf.) Papers (1956), pp. 125–146.Google Scholar
  25. 25.
    S. N. Komnik and V. V. Demirskii, “Relationship between the plastic flow and the mechanical instability of materials at cryogenic temperatures,” in:Cryogenic Materials and Welding Them (Intern. Conf.), Papers [in Russian], Naukova Dumka, Kiev (1986), pp. 61–66.Google Scholar
  26. 26.
    E. V. Vorob'ev, “Low-temperature hardening of structural alloys under the action of strong magnetic fields”,Probl. Prochn., No. 6, 48–52 (1990).Google Scholar
  27. 27.
    N. A. MakhutovDeformation Criteria for Fracture and Strength Calculation for Structural Elements [in Russian], Mashinostroenie, Moscow (1987).Google Scholar
  28. 28.
    A. A. Lebedev and É. V. Chechin “On the choice of allowable stresses in design calculation by the static-strength criterion,”Probl. Prochn., No. 4, 32–34 (1980).Google Scholar
  29. 29.
    G. S. Pisarenko and A. A. Lebedev,Deformation and Strength of Materials in a Complex Stress State [in Russian], Naukova Dumka, Kiev (1976).Google Scholar

Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • E. V. Vorob'ev
  • V. A. Strizhalo

There are no affiliations available

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