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Heating and heat treatment
ArticleName Effect of thermal treatment on formation of residual stresses and the method of their determination in samples from 5KhNM steel
ArticleAuthor A. A. Khlybov, D. A. Ryabov, T. V. Nuzhdina, K. A. Minkov

Nizhniy Novgorod State Technical University (Nizhniy Novgorod, Russia):

A. A. Khlybov, Dr. Eng., Prof., head of Dept. “Material science, technologies of materials and heat treatment of metals”, e-mail:
D. A. Ryabov, Engineer, Dept. “Material science, technologies of materials and heat treatment of metals”
T. V. Nuzhdina, Cand. Eng., Associate Prof., Dept. “Material science, technologies of materials and heat treatment of metals”


Ruspolimet (Kulebaki, Russia):
K. A. Minkov, Post-Graduate, Leading Engineer


In this paper, the problems of the formation of residual stresses in samples of steel 5CrNiMo after various heat treatment modes: quenching, tempering, normalization, annealing are considered. The magnitude of residual stresses (further RS) largely determines the service life of the product. Therefore, obtaining information about the magnitude of RS in real constructions (without its destruction) is an urgent task, since the information obtained allows us to understand the changes in their values and the nature of the distribution of such stresses. Ultimately, this allows to improve the performance characteristics of products. In the course of the work, the analysis of the cooling kinetics of the samples was carried out, metallographic studies were carried out, the hardness and the magnitude of the stresses resulting from thermal operations were evaluated. The relationship between the magnitude of residual stresses and the parameters of elastic waves is established. To determine the values of RS, x-ray and acoustic methods were used. A comparative analysis of the results of the measurement of RS by acoustic and X-ray methods showed that methods of controlling RS that are different in physical nature give practically identical values. It is shown that the elastic characteristics (E, G, ν) can be obtained in the process of acoustic measurements directly on the constructions, without fabrication and testing of special specimens for tension. X-ray diffraction analysis showed that the lattice parameter depends on the heat treatment conditions.

keywords Non-destructive testing, technical diagnostics, ultrasonic method, heat treatment, hammer dies, residual stresses, steel 5CrNiMo

1. Ryabov D. А., Khlybov А. А., Minkov К. А. About the prospect of using water-air mixture for cooling hammer dies. Trudy NGTU im R. E. Alekseeva. 2018. No. 1 (120). pp. 196–203.
2. Gostev К. А. Effect of stresses in the mill rolls on their operational reliability. Stal. 2008. No. 11. pp. 78–87.
3. Prigorovsky N. I. Methods and means of determining the strain and stress fields: handbook. Moscow: Mashinostroenie. 1983. 248 p.
4. Zakharov V. А., Ulyanov А. I., Gorkunov E. S. Regularities of coercive force change during biaxial asymmetric deformation of St3 steel. Defektoskopiya. 2010. No. 3. p. 55.
5. Shcherbinin V. Е., Gorkunov E. S. Magnetic quality control of metals. Yekaterinburg: UrO RAN. 1996.
6. Nikitina N. Е. Acoustic elasticity, practical experience. Nizhny Novgorod: TALAM. 2005. 208 p.
7. Muravyev V. V., Muravyeva О. V., Strizhak V. А. Acoustic tensometry and structuroscopy of railway wheels: monograph. Izhevsk: IzhGTU, 2014. 180 p.
8. Muravyev V. V., Zuev L. B., Komarov К. D. The sound speed and steel and alloys structure. Novosibirsk: Nauka, Sibirskaya izdatelskaya firma RAN. 1996. 184 p.
9. Klyuev V. V. Non-destructive testing. Vol. 3. Ultrasound control. Moscow: Mashinostroenie. 2004. 864 p.
10. Khlybov A. A., Uglov A. L. On the inspection of the stressed state of anisotropic steel pipelines using the acoustoelasticity method. Russian Journal of Nondestructive Testing. 2015. Vol. 51. Iss. 4. P. 210–216.
11. Khlybov A. A. Effect of Heat Treatment on Residual Stresses in the Zone of Fusion of Austenitic and Vessel Steels. Metal science and heat treatment. 2016. Vol. 58. Iss. 7–8. pp. 426–430.
12. Khlybov A. A., Uglov A. L., Rodyushkin V. M. et al. The determination of mechanical stresses using rayleigh surface waves excited by a magnetoacoustic transducer. Russian Journal of Nondestructive Testing. 2014. Vol. 50. No. 12. pp. 701–707.
13. Non-destructive testing: handbook: in 8 volumes. Edited by Klyuev V. V. Volume 4: in 3 books; book. 1: Anisimov V. А., Katorgin B. I., Kutsenko А. N. et. al. Acoustic extensometry. Book 2: Shelikhov G. S. Magnetic powder control method. Book 3: Filinov М. V. Capillary control. 2nd edition revised. Moscow: Mashinostroenie, 2006. 736 p.
14. Trofimov Т. I. Physics course: tutorial for institutes of higher educatiion. 11th stereotypical edition. Moscow: Izdatelsky tsentr «Akademiya». 2006. 560 p.
15. Uglov А. L., Aleshin N. P., Prilutsky М. А., Khlybov А. А. Acoustic method for determining axial stresses for an arbitrary section of pipeline. Zavodskaya laboratoriya. Diagnostika materialov. 2008. No. 3. pp. 26–28.
16. GOST 1497–84. Metals. Methods of tension test. Introduced: 01.01.1986.
17. Uglov А. L., Erofeev V. I., Smirnov А. N. Acoustic control of equipment in the manufacture and operation. Moscow: Nauka, 2009. 280 p.
18. Umansky Ya. S., Skakov Yu. А., Ivanov А. N., Rastorguev L. N. Crystallography, X-ray and electron microscopy Moscow: Metallurgiya. 2012. 632 p.
19. Korchunov A. G., Gun G. S., Shiryaev O. P., Piviovarova K. G. Study of structural transformation of hot-rolled carbon billets for highstrength ropes for responsible applications via the method of thermal analysis. CIS Iron and Steel Review. 2017. Vol. 13. pp. 39–42.
20. Gulyaev А. P. Heat treatment of steel. Moscow: Mashgiz, 1960. 495 p.
21. Blumenau М., Baeumer А. Problems and prospects of continuous annealing of AHSS steels with improved characteristics. Chernye Metally. 2016. No. 5. pp. 58–64.

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