Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Strain hardening and structural changes in molybdenum in tension with the application of ultrasonic vibrations

  • 29 Accesses

Conclusions

  1. 1.

    In the tension of molybdenum with the application of ultrasonic vibrations the general rules of strain hardening according to a multistage plan are observed, but under the influence of the ultrasonic vibrations the stage of parabolic hardening with a tangle type dislocation structure is significantly broadened within the studied range of amplitudes and a later transition to the stage of formation of the dislocation cell structure is noted.

  2. 2.

    The relationship of the parameters of strain hardening and of the dimensions of the cell structure to the amplitude of the ultrasonic vibrations have a complex inconsistent structure caused by the simultaneous action of competing mechanisms of softening (the ultrasonic vibrations reduce the resistance to dislocation movement) and hardening (ultrasonic vibrations of larger amplitude cause the generation of new additional dislocations).

This is a preview of subscription content, log in to check access.

Literature Cited

  1. 1.

    E. G. Konovalov, V. M. Drozdov, and M. D. Tyavlovskii, The Dynamic Strength of Metals [in Russian], Nauka i Tekhnika, Minsk (1969).

  2. 2.

    N. S. Mordyuk and P. N. Okrainets, Features of the Influence of Ultrasonics on the Mechanical and Structural Characteristics of Metals [in Russian], Kiev (1977) (Preprint of the Institute of Metal Physics, Academy of Sciences of the Ukrainian SSR).

  3. 3.

    V. I. Trefilov, I. D. Gornaya, V. F. Moiseev, and É. P. Pechkovskii, “Determination of the boundaries of the structural states from the loading curves,” Dop. Akad. Nauk Ukr. RSR, Ser. A, No. 5, 83–86 (1980).

  4. 4.

    I. D. Gornaya, V. F. Moiseev, É. P. Pechkovskii, and V. I. Trefilov, “Some rules of strain hardening of polycrystalline molybdenum alloys,” Probl. Prochn., No. 5, 77–82 (1971).

  5. 5.

    V. I. Trefilov, I. D. Gornaya, V. F. Moiseev, et al., “The linear stage in strain hardening of polycrystalline bcc metals and alloys,” Dop. Akad. Nauk Ukr. RSR, Ser. A, No. 11, 81–85 (1982).

  6. 6.

    A. V. Kozlov, N. S. Mordyuk, and N. A. Piskun, “Features of the plastic deformation of a niobium-zirconium-carbon alloy in tension in an ultrasonic field,” Metallofizika,4, No. 6, 117–118 (1982).

  7. 7.

    T. Takeuchi, “Theory of low temperature work-hardening of bcc metals,” J. Phys. Soc. Jpn.,27, No. 2, 436–443 (1969).

  8. 8.

    Ya. M. Vitorskii, R. K. Ivashchenko, A. N. Kaverina, et al., “The influence of deformation temperature on the structure and mechanical properties of low-alloy molybdenum,” Fiz. Met. Metalloved.,31, No. 5, 1076–1080 (1971).

  9. 9.

    H. J. McQueen, “The production and utility of recovered dislocation substructures,” Met. Trans.,8A, No. 6, 807–824 (1977).

  10. 10.

    L. C. J. Taijaard, G. T. van Rooyen, “Determination of the basic stress-strain curve of low-carbon steel by the elimination of the yield point effect by cyclic plastic deformation,” Materialprüf,13, No. 8, 260–264 (1971).

  11. 11.

    V. I. Trefilov, I. D. Gornaya, V. F. Moiseev, and É. P. Pechkovskii, “Strain hardening and the ductile-brittle transition in molybdenum,” Dop. Akad. Nauk Ukr. RSR, Ser. A, No. 6, 98–102 (1981).

  12. 12.

    V. I. Trefilov and V. F. Moiseev, Dispersed Particles in Refractory Metals [in Russian], Naukova Dumka, Kiev (1978).

  13. 13.

    I. D. Gornaya, V. V. Ivashchenko, I. V. Koryakin, et al., “The dislocation structure and mechanical properties of MChVP molybdenum alloy after hot hydroextrusion,” Ukr. Fiz. Zh.,28, No. 1, 97–101 (1983).

Download references

Additional information

Institute of Problems of Material Sciences, Academy of Sciences of the Ukrainian SSR, Kiev. Institute of Metal Physics, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Problemy Prochnosti, No. 3, pp. 60–63, March, 1985.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Ivashchenko, V.V., Kozlov, A.V., Moiseev, V.F. et al. Strain hardening and structural changes in molybdenum in tension with the application of ultrasonic vibrations. Strength Mater 17, 368–373 (1985). https://doi.org/10.1007/BF01755923

Download citation

Keywords

  • Structural Change
  • Molybdenum
  • Strain Hardening
  • General Rule
  • Large Amplitude