Change in the Mechanical Properties of Commercial-Purity Copper during Alternating Elastoplastic Deformation

  • 2 Accesses


The mechanical properties of commercial-purity copper strips subjected to alternating elastoplastic deformation in a mangle have been studied. One pass is shown to be sufficient to increase the yield strength of a treated strip by four times with only a slight change in the ultimate strength and a relatively insignificant decrease in the ductility. The study of the correlation of the hardness with the strength characteristics shows that Vickers microhardness HV0.1 of the treated strip surface increases to a lesser degree than the yield strength does. In this case, the yield-strength Brinell hardness that corresponds to a residual strain of 0.2% increases by almost four times. The strain-hardening coefficients that enter in the Meyer equation for indentation and the Ludwik–Hollomon equation for tension have been determined. Their correlation is observed for the copper strips before and after treatment.

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

Access options

Buy single article

Instant unlimited access to the full article PDF.

US$ 39.95

Price includes VAT for USA

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.


  1. 1

    X. L. Wu, M. X. Yang, F. P. Yuan, L. Chen, and Y. T. Zhu, “Combining gradient structure and TRIP effect to produce austenitic stainless steel with high strength and ductility,” Acta Mater. 112, 337–346 (2016).

  2. 2

    V. P. Sirotinkin, V. F. Terent’ev, and A. K. Slizov, “Study of surface layers of cold-rolled thin-sheet trip-steel by X-ray diffraction,” Deform. Razrushenie Mater., No. 5, 21–26 (2016).

  3. 3

    M. Ya. Browman, “On elastoplastic beam bending during motion,” Izv. Akad. Nauk SSSR, Ser. Mech. Tverd. Tel, No. 3, 155–160 (1982).

  4. 4

    E. A. Maksimov and R. L. Shatalov, “Modeling of a stress–strain state at flattening of thick sheets on a mangle,” Stal’, No. 1, 31–34 (2018).

  5. 5

    V. N. Shinkin, “Calculation of technological parameters of flattening of thin steel strip on a Fagor Arrasate 15-roll mangle,” Molodoi Uchenyi, No. 10, 361–366 (2015).

  6. 6

    I. V. Nedorezov, Simulation of Processes of Flattening of Rolled Metals on Roll Machines (Akvapress, Yekaterinburg, 2003).

  7. 7

    A. E. Shelest, V. S. Yusupov, M. M. Perkas, E. N. Sheftyel’, and K. E. Akopyan, “Development of the technique of determining the geometric and deformation parameters of flattening of metallic sheets on mangles,” Proizvod. Prokata, No. 7, 3–8 (2016).

  8. 8

    A. E. Shelest, V. S. Yusupov, M. M. Perkas, E. N. Sheftyel’, V. V. Prosvirin, and K. E. Akopyan, “Formation of the mechanical properties of copper strips during alternating elastoplastic bending,” Rus. Met. (Metally), No. 5, 500–507 (2018).

  9. 9

    V. M. Matyunin, A. Yu. Marchenkov, E. V. Terent’ev, and A. N. Demidov, “Substantiation of the ratio of the sample thickness to the indentation depth in hardness measurements,” Rus. Met. (Metally), No. 13, 47–50 (2016).

  10. 10

    S. A. Fedosov and L. Peshek, Determination of the Mechanical Properties of Materials by Indentation. Modern Foreign Techniques (MGU, Moscow, 2004).

  11. 11

    M. P. Markovets, Determination of the Mechanical Properties of Metals by Their Hardness (Mashinostroenie, Moscow, 1979).

  12. 12

    V. M. Matyunin, Indentation in the Diagnostics of the Mexchanical Properties of Materials (MEI, Moscow, 2015).

  13. 13

    Yu. V. Mil’man, S. N. Dub, and A. A. Golubenko, “Scale dependence of the hardness and thecharacteristics of the ductility determined during indentation,” Deform. Razrushenie Mater., No. 8, 3–10 (2008).

  14. 14

    S. I. Bulychev, “Yield strength hardness and the hysteresis,” Deform. Razrushenie Mater., No. 1, 41–45 (2011).

  15. 15

    E. Meyer, “Untersuchungen über Härterprüfung and Härte Brinell Methoden,” Zeit. Vereins Deutscher Ingenieure, 52, 645–654 (1908).

  16. 16

    V. F. Terent’ev and S. A. Korableva, Fatigue of Metals (Nauka, Moscow, 2015).

Download references

Author information

Correspondence to A. Yu. Marchenkov.

Additional information

Translated by Yu. Ryzhkov

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Matyunin, V.M., Marchenkov, A.Y., Shelest, A.E. et al. Change in the Mechanical Properties of Commercial-Purity Copper during Alternating Elastoplastic Deformation. Russ. Metall. 2019, 1057–1062 (2019).

Download citation


  • mangle
  • copper
  • hardness
  • mechanical properties
  • strain-hardening coefficient