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ArticleName Production of transverse magnetic field annealed brass band and how the production process influences the mechanical properties, as well as their correlation and compliance
DOI 10.17580/tsm.2022.04.08
ArticleAuthor Pevzner M. Z., Sergeev D. G.

Vyatka State University, Kirov, Russia:

M. Z. Pevzner, Professor at the Department of Metals Processing, Candidate of Technical Sciences, Associate Professor, e-mail:
D. G. Sergeev, Acting Head of the Department of Mechanical Engineering Technology, Candidate of Technical Sciences, Associate Professor


This paper examines the effect of the thickness h, the deformation reached during the last cold rolling operation ε and the final normalized annealing mode v on the mechanical properties of brass band. The paper looks at the correlation between the ultimate strength σв, elongation and hardness HV in terms of their meeting the specification. The production of L68 brass band involved semi-continuous casting, hot rolling to the thickness of 6 mm and cold rolling to h = ~0.56–0.96 mm with intermediate annealing at H = 1.5–2.7 mm ensuring the deformation ε within 62 to 72%. The intermediate and final continuous annealing lines are equipped with three-phase TFIH (Transverse Flux Induction Heating) units. An intermediate annealing mode has been established that ensures the grain size of 40–80 μm. The strip travel speed was varied as follows during final annealing: ν = 30–46 m/min. The authors determined the stochastic dependences of the properties on ν , h and ε, as well as the annealing modes that are necessary to achieve each property. Actual correlations HV(σв), δ(σв) within the specified ranges were considered versus the properties of the band produced by deformation. It was established that the cold rolling process, together with the heat treatment mode, has an effect on the properties of annealed band and, vice versa, on the heat treatment mode that is necessary to achieve the required properties. With hardness being the same, the induction heat annealed brass band has a higher ultimate strength в than the band produced by normalized final deformation. As a result, the linear relationship σв = f(HV) of the rolled band produced by normalized final annealing is shifted in relation to the optimum position of such relationship within the specified limits adopted in the period when the rolled band was exclusively produced by final deformation. Consequently, the final annealing mode ranges that are necessary for achieving certain properties within the specified ranges, do not match, thus making the task of having the resulting properties hit the above ranges more challenging. Thus, it is proposed to use online control and annealing control to eliminate rejects, and to use the annealing mode-required property relationships obtained from the given data for setting up the initial process mode.

keywords Continuous heat treatment, correlation of properties, TFIH method, annealing mode, mechanical properties, normalized annealing, hardness and strength, online control

1. Tolstobrov A. K., Shatalov R. L., Budneva T. V., Agafonov A. A. Understanding the effect of annealing temperature on the mechanical properties of thin strips made from CuNi12Zn24 alloy going through a continuous line. Tsvetnye Metally. 2021. No. 6. pp. 80–83. DOI: 10.17580/tsm.2021.06.12.
2. Feng Li, Jinqiang Ning, Steven Y. Liang. Analytical modeling of the temperature using uniform moving heat source in planar induction heating process. Applied Sciences. 2019. No. 9. p. 1445.
3. Wiser I. F., Mannens R., Feuerhack A., Trauth D., Bergs T. An analytical approach for the determination of the temperature distribution in the cross section of a sheet metal caused by inductive heating. Procedia Manufacturing. 2019. Vol. 29. pp. 353–360.
4. Kangda Hao, Ming Gao, Chen Zhang, Run Wu, Xiaoyan Zeng. Achieving continuous cold rolling of martensitic stainless steel via online induction heat treatment. Мaterials Science and Engineering: А. 2019. Vol. 739. pp. 415–4 26.
5. Xiao Hong, Xu Pengpeng, Ql Zichen, Wu Zonghe, Zhao Yunpeng. Preparation of steel/aluminum laminated composites by differential temperature rolling with induction heating. Acta Metallurgica Sinica. 2020. Vol. 56, Iss. 2. pp. 231–239.
6. Lupi S., Forzan M., Aliferov A. Induction and direct resistance heating: theory and numerical modeling. Switzerland : Springer, 2015. 370 p.
7. Pevzner M. Z., Shirokov N. M., Khayutin S. G. Continuous induction heat treatment of bands and strips. Moscow : Metallurgiya, 1994. 128 p.
8. GOST 2208–2004. Brass foil, ribbons, strips, sheets and plates. Introduced: 08.07.2008. Moscow : Izdatelstvo standartov, 2007.
9. Pevzner M. Z. Advancing the process of production of brass strips using continuous induction heat treatment in transverse magnetic field. Metal Science and Heat Treatment. 2012. Vol. 54, No. 3–4. pp. 178–183.
10. Goins P. E., Murdoch H. A., Hernandez-Rivera E., Tschopp М. А. Effect of magnetic fields on microstructure evolution. Сomputational Materials Science. 2018. Vol. 150. pp. 464–474.
11. Wu Y., Wang Q., Zhao X. Effect of high magnetic field on recrystallization behavior of cold rolled H70 brass. 14th National Conference on Theory of Magnetism. 2017. Vol. 827. pp. 1–4.
12. Banis A., Duran E. H., Bliznuk V., Bliznuk V., Sabirov I., Petrov R. H., Papaefthymiou S. The effect of ultrafast heating on the microstructure, grain size and texture evolution of a commercial low-C, medium-Mn DP Steel. Metals. 2019. Vol. 9, No. 8. p. 877.
13. Molodov D. A. Grain boundary dynamics under an applied stress. Materials Science Forum. 2013. Vol. 753. pp. 101–106.
14. Ying-Jun Gao, Qian-Qian Deng, Zhe-yuan Liu, Zong-Ji Huang, Yi-Xuan Li et al. Modes of grain growth and mechanism of dislocation reaction under applied biaxial strain: atomistic and continuum modeling. Journal of Materials Science and Technology. 2020. Vol. 49. pp. 236–250.
15. Yan C., Wang Y., Liu C., Wu S. Influence of transverse flux induction heating excitation parameters on steel strip temperature and heater optimization. Heat Treatment of Metals. 2021. Vol. 46. pp. 87–94.
16. Wu J. C., Wang S. P., Wang Y. H., Liu C. Sensitivity Analysis of Design Parameters in Transverse Flux Induction Heating Device. IEEE Transactions on Applied Superconductivity. 2020. Vol. 30, Iss. 4. p. 8998171.
17. Schulze M., Nikanorov A., Nacke B. Hierarchical shape optimization of one-sided transverse flux heating induction coil. The International Journal for Computation and Mathematics in Electrical and Electronic Engineering. 2020. Vol. 39. No. 1. pp. 73–80.
18. Kobzar A. I. Applied mathematical statistics: For engineers and researchers. Moscow : Fizmatlit, 2006. 816 p.
19. Pevzner M. Z., Sergeev D. G. Energy consumption, properties control and control of continuous transverse magnetic field annealing of rolled copper and brass. Metallovedenie i termicheskaya obrabotka metallov. 2021. No. 9. pp. 51–57.
20. Guowei Wang, Lan Huang, Xin Zhan, Liming Tan, Zijun Qin et al. Strength-hardness correlations of thermal-exposed oxide dispersion strengthened nickel-based superalloy with different grain size distributions. Materials Characterization. 2021. Vol. 178. p. 111178.
21. Kozhin V. D., Pevzner M. Z. The problem of adopting modern heat treatment processes. Tsvetnye Metally. 1992. No. 12. pp. 50–3.
22. Pevzner M. Z., Vylegzhanin A. Yu. Control of continuous induction annealing of rolled brass to semi-solid state and control of its properties. Proizvodstvo prokata. 2016. No. 11. pp. 10–19.

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