INFLUENCE OF THE MAGNETIC FIELD WITH AN INDUCTION OF 0.4 TL ON THE PLASTIC PROPERTIES OF C2 LEAD

The paper studies the dynamics of deformation characteristics of technically pure C2 lead under the influence of a constant magnetic field with magnetic induction of 0.4 T. Mechanical creep tests were performed, the microhardness of lead samples was measured in the initial state (without the influence of a magnetic field) and under the influence of external magnetic field. Based on the experimental results, creep deformation curves and the dependence of microhardness on the exposure time in a magnetic field are constructed. The stages of creep are determined. A linear stage was identified, at the site of which the creep rate of lead was calculated before and after the application of an external magnetic field. Quantitative changes in the studied characteristics were established. Under the influence of the magnetic field, there was a significant decrease in the creep rate. The relative residual elongation of samples destroyed during creep under the influence of a magnetic field decreased. The initial effect of the influence of a magnetic field with an induction of 0.4 T on the lead microhardness is investigated: the microhardness of the studied samples increases. An increase in the holding time in the magnetic field does not lead to significant changes in the lead microhardness.  The maximum magnification is achieved after holding in the magnetic field for 1 hour. The correlation of changes in the creep rate and changes in the microhardness of the material exposed to a magnetic field with magnetic induction of 0.4 T was revealed.

1. Ida N. The static magnetic field. In: Engineering electromagnetics. Springer, New York, NY. 2021, pp. 377–418.

2. Gillon P. Uses of intense d.c. magnetic fields in materials processing. Materials science and engineering: A. 2000, no. 287, pp. 146–152.

3. Watanabe K., Motokawa M., Herlach F. Materials science in static high magnetic fields. In: Materials science in static high magnetic fields. Springer-Verlag Berlin Heidelberg, 2002, pp. 3–10.

4. Cai Q., Zhai C., Luo Q., Zhang T.-Y. Effects of magnetic field on the microstructure and mechanical property of Mg–Al–Gd alloys. Materials characterization. 2019, no. 154, pp. 233–240.

5. Balaji S. Magnetic fields in materials. In: Electromagnetics made easy. Springer, Singapore. 2020, pp. 355–379.

6. Bilal N., Xiaoyan L., Zhinan Y., Jiali Z., Fucheng Z., Junkui L. Effect of magnetic field on microstructure and mechanical properties of austempered 70Si3MnCrsteel. Materials science and engineering: A. 2019, vol. 759, pp. 11–18.

7. Yasuda H., Molokov S., Moreau R., Moffatt K. Applications of high magnetic fields in materials processing. In: Magnetohydrodynamics. Fluid mechanics and its applications. Springer, Dordrecht. 2007, pp. 329.

8. Asai S. Application of high magnetic fields in materials processing. Cheminform. 2006, vol. 24, no. 37, pp. 349–354.

9. Papaefthymiou G. Magnetic fields in materials. In: The magnetic fields 1st Edition. 2022, pp. 3–29.

10. Zagulyaev D.V., Konovalov S.V., Komis-sarova I.A., Litvinenko N.G., Gromov V.E. Regularities of changes in the deformation behavior of polycrystalline copper after magnetic treatment. Vestnik Tambovskogo universiteta. Seriya: Estestvennye i tekhnicheskie nauki. 2013, vol. 18, no. 4-2, pp. 1763–1766. (In Russ.).

11. Zagulyaev D.V., Konovalov S.V., Ponomareva M.V. et al. The influence of a weak magnetic field on the plasticity of aluminum A85. Vestnik Tambov-skogo universiteta. Seriya: Estestvennye i tekhnicheskie nauki. 2010, vol. 15, no. 3-1, pp. 820–821. (In Russ.).

12. Pshonkin D.E. Effect of static magnetic fields on creep of aluminum alloy. Solid state phenomena. 2017, no. 269, pp. 1–6.

13. Skvortsov A.A., Pshonkin D.E. The in-fluence of a magnetic field on the creep of an aluminum alloy with Fe-containing inclusions. In: Phase transformations and crystal strength: collection of abstracts of the X International Conference (October 29 – November 2, 2018, Chernogolovka). Chernogolovka, 2018, p. 91. (In Russ.).

14. Serebryakova A.A., Zagulyaev D.V., Shlyarov V.V. The influence of a magnetic field with an in-duction of 0.3 Tl on the plastic properties of technically pure lead. In: Metallurgy: technologies, innovations, quality: Proceedings of the XXII International Scientific and Practical Conference (November 10-11, 2021. In 2 parts. Part 1. Novokuznetsk: SibGIU, 2021, pp. 261–266. (In Russ.).

15. Konovalov S.V., Danilov V.I., Zuev L.B. et al. Automated installation for registration and analyzing of creep of metals and alloys. Zavodskaya laboratoriya. Diagnostika materialov. 2007, no. 8, pp. 64–66. (In Russ.).

16. Zagulyaev D., Konovalov S., Shlyarov V., Chen X. Influence of constant magnetic field on plastic characteristics of paramagnetic metals. Materials Research Express. 2019, vol. 6, no. 9. https://doi.org/10.1088/2053-1591/ab2c8a

17. Mil'man Yu.V. Scale dependence of hardness and plasticity characteristics determined during indentation. Deformatsiya i razrushenie materialov. 2008, no. 8, pp. 3–10. (In Russ.).

18. Pinchuk A.I., Shavrei S.D. Correlation between microhardness and mobility of twin dislocations in bismuth crystals under the application of a constant magnetic field and current pulses. Pis'ma v ZhTF. 2002, vol. 28, no. 12, pp. 80–84. (In Russ.).