Journals →  Chernye Metally →  2022 →  #2 →  Back

Rolling and Tubemaking
ArticleName Determination of in-plane anisotropy of rolled sheets, taking into account the eff ect of strain intensity
DOI 10.17580/chm.2022.02.02
ArticleAuthor A. N. Malyshev, V. D. Kukhar, A. V. Chernyaev, V. A. Korotkov

Kaluga branch of Bauman Moscow State Technical University (National Research University), Kaluga, Russia:

A. N. Malyshev, Cand. Eng., Associate Professor, Dept. of Mechanical Engineering


Tula State University, Tula, Russia:
V. D. Kukhar, Dr. Eng., Professor, Head of the Dept. of Theoretical Mechanics
A. V. Chernyaev, Dr. Eng., Professor, Dept. of Mechanics of Plastic Forming, e-mail:
V. A. Korotkov, Cand. Eng., Associate Professor, Dept. of Mechanics of Plastic Forming


The results of experimental studies of the mechanical properties anisotropy of rolled sheets made of NKh260YD steel are presented. Tension was applied to flat specimens cut in directions of 0, 45, and 90 degrees with respect to the rolling direction. A dividing grid was applied to the samples with a diamond indenter in the area of the estimated length on an instrumental microscope. Based on the results of measurements of the samples linear dimensions before and after deformation in the places where the dividing grid was applied, the logarithmic deformations were calculated over the width and thickness of the sample in each of the considered sections. The results of measurements and calculations showed the uneven intensity of deformations in its various sections. For further processing, data in sections under conditions of uniform deformation were used. The anisotropy coefficients were determined as the ratio of logarithmic strains over the width and thickness of the sample. The tension was carried out in three stages, which made it possible to establish the dependences of the anisotropy coefficients on the strain intensity, which were used to assess the degree of in-plane anisotropy of the material under study. Graphic dependences are presented illustrating the nature of the change in the anisotropy coeffi cients and the degree of anisotropy of the material under study depending on the intensity of deformation. A significant dependence of the HX260YD steel planar anisotropy degree on the magnitude of the strain intensity is shown, which must be taken into account when developing technological processes for production of critical articles from anisotropic sheet material by plastic shaping operations.

keywords Sheet metal, anisotropic material, static tension, anisotropy coeffi cient, degree of anisotropy, strain intensity

1. Yakovlev S. P., Yakovlev S. S., Andreychenko V. А. Forming of anisotropic materials. Kishinev: Kvant, 1997. 331 p.
2. Khvan А. D., Khvan D. V., Voropaev А. А. Plastic anisotropy of metallic alloys. Metally. 2020. No. 3. pp. 103–108.
3. Korkolis Y. P., Mitchell B. R., Locke M. R., Kinsey B. Plastic flow and anisotropy of a lowcarbon steel over a range of strain-rates. International Journal of Impact Engineering. 2018. Vol. 121. pp. 157–171.
4. Li Q., Zhang H., Chen F., Xu D., Sui D., Cui Z. Study on the plastic anisotropy of advanced high strength steel sheet: Experiments and microstructure-based crystal plasticity modeling. International Journal of Mechanical Sciences. 2020. Vol. 176. p. 105569.
5. Kolikov А. P., Romantsev B. А. Theory of metal forming. Moscow: MISiS, 2015. 451 p.
6. Shinkin V. N. Influence of non-linearity of hardening curve on elasticoplastic bend of rectangular rod. CIS Iron and Steel Review. 2019. Vol. 17. pp. 39–42.
7. Bessmertnaya Y. V., Pasynkov A. A., Larin S. N. On the estimation of flanging limit coefficient for metals characterized by anisotropy of mechanical properties. Journal of Chemical Technology and Metallurgy. 2018. Vol. 53. No. 5. pp. 961–966.
8. Suzuki T., Okamura K., Capilla G., Hamasaki H., Yoshida F. Effect of anisotropy evolution on circular and oval hole expansion behavior of high-strength steel sheets. International Journal of Mechanical Sciences. 2018. Vol. 146–147. pp. 556–570.
9. Demin V. A., Larin S. N., Riskin R. V., Rizkova A. A. Study the infl uence of anisotropy of the drawing cylindrical part. CIS Iron and Steel Review. 2018. Vol. 16. pp. 25–28.
10. Larin S. N., Platonov V. I., Korotkov V. А. The design of a matrix for drawing of materials processing planar anisotropy of mechanical properties. Tsvetnye Metally. 2018. No. 7. pp. 83–87.
11. Korotkov V. А., Platonov V. I., Bessmertnyaya Yu. V., Samsonov N. А. Elimination of earing when drawing cylindrical shells from sheet metals with in-plane anisotropy of mechanical properties. Kuznechno-shtampovochnoe proizvodstvo. Obrabotka materialov davleniem. 2018. No. 10. pp. 34–38.
12. Shinkin V. N. Simple analytical dependence of elastic modulus on high temperatures for some steels and alloys. CIS Iron and Steel Review. 2018. Vol. 15. pp. 32–38.
13. Chudin V. N., Chernyaev А. V., Tesakov D. М. To calculation of stresses in drawing of anisotropic viscoplastic material. Tsvetnye Metally. 2021. No. 5. pp. 84–88.
14. Chernyaev А. V., Tesakov D. М. Post-drawing of anisotropic viscoplastic material. Naukoemkie tekhnologii v mashinostroenii. 2021. No. 5. pp. 3–6.
15. Pasynkov А. А., Boriskin О. I., Larin S. N. Theoretical researches on operation of isothermal distribution of tubes from diffi cult-to-form non-ferrous alloys in conditions of a short-term creep. Tsvetnye Metally. 2018. No. 3. pp. 80–84.
16. Safronov A., Belsky S.M., Filatov A. Study of the microstructure of electrotechnical anisotropic steel with accelerated cooling. Procedia Manufacturing. 2019. Vol. 37. pp. 236–238.
17. Xu J., Wang Z., Yan Y., Li J., Wu M. Effect of hot/warm rolling on the microstructures and mechanical properties of medium-Mn steels. Materials Characterization. 2020. Vol. 170. p. 110682.
18. GOST 11701–84. Metals. Methods of tensile testing of thin sheets and strips. Introduced: 01.01.1986. Moscow: Izdatelstvo standartov, 1984.
19. GOST 1497–84. Metals. Methods of tension test. Introduced: 01.01.1986. Moscow: Izdatelstvo standartov, 1984.
20. Shinkin V. N. Direct and inverse non-linear approximation of hardening zone of steel. Chernye metally. 2019. No. 3. pp. 32–37.
21. Demin V. A., Chernyaev A. V., Platonov V. I., Korotkov V. A. Experimental technigue for determining the mechanical properties of metal under stretching at high temperature. Tsvetnye metally. 2019. No. 5. pp. 66–73. DOI: 10.17580/tsm.2019.05.08.

Language of full-text russian
Full content Buy