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Evaluating the efficiency of hardening treatment of cylindrical parts made of structural steels
- Authors: Sazanov V.P.1, Pavlov V.F.1, Semyonova O.Y.1, Prokhorov A.A.1
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Affiliations:
- Samara National Research University
- Issue: Vol 17, No 2 (2018)
- Pages: 164-173
- Section: MECHANICAL ENGINEERING
- URL: https://journals.ssau.ru/vestnik/article/view/6229
- DOI: https://doi.org/10.18287/2541-7533-2018-17-2-164-173
- ID: 6229
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Abstract
The investigated objects are solid and hollow notched cylindrical specimens made of structural steels surface-hardened with the use of two techniques: hydraulic shot blasting and air shot blasting. The subject of the investigation is the residual stresses in the surface layer of the specimens after hardening. The purpose of the work is to investigate the influence of residual stresses on high-cycle fatigue and to establish the possibility of using the developed calculation methods for the evaluation of surface hardening efficiency. Residual stress distribution in the surface layer and high-cycle fatigue resistance of cylindrical specimens were analyzed using calculation and experimental methods. The use of calculation methods for evaluating the efficiency of hardening treatment showed that the difference between the calculated and experimental values of the endurance limit increments due to hardening of cylindrical specimens with semicircular notches does not exceed 8% in the case of hydraulic shot blasting (steel 40X) and 11% in the case of air shot blasting (steel 20). The use of calculation methods for defining the endurance limit increment makes it possible to evaluate the efficiency of surface hardening with practical accuracy without long- run and expensive fatigue tests.
About the authors
V. P. Sazanov
Samara National Research University
Author for correspondence.
Email: sazanow@mail.ru
Candidate of Science (Engineering)
Associate Professor of the Department of Strength of Materials
V. F. Pavlov
Samara National Research University
Email: sopromat@ssau.ru
Doctor of Science (Engineering), Professor
Head of the Department of Strength of Materials
O. Yu. Semyonova
Samara National Research University
Email: sopromat@ssau.ru
Candidate of Science (Engineering)
Associate Professor of the Department of Higher Mathematics
A. A. Prokhorov
Samara National Research University
Email: sopromat@ssau.ru
Candidate of Science (Engineering)
Associate Professor of the Department of Strength of Materials
References
- Pavlov V.F. On connection between residual stresses and the endurance limit under bending in stresses concentration conditions. Proceedings of Higher Educational Institutions. Machine Building. 1986. No. 8. P. 29-32. (In Russ.)
- Pavlov V.F. Influence of a value and a distribution of residual stresses in the surface layer of a part with a concentrator on the endurance limit. Report 1. Solid parts. Proceedings of Higher Educational Institutions. Machine Building. 1988. No. 8. P. 22-26. (In Russ.)
- Pavlov V.F. The influence of a value and a distribution of residual stresses in the surface layer of a part with a concentrator on the endurance limit. Report II. Hollow parts. Proceedings of Higher Educational Institutions. Machine Building. 1988. No. 12. P. 37-40. (In Russ.)
- Pavlov V.F., Kirpichev V.A., Vakulyuk V.S. Prognozirovanie soprotivleniya ustalosti poverkhnostno uprochnennykh detaley po ostatochnym napryazheniyam [Prediction of fatigue strength of surface hardened components by residual stresses]. Samara: Samarskiy Nauchnyy Tsentr RAN Publ., 2012. 125 p.
- Vakuljuk V.S. The dependence of detail fatigue resistance on the thickness of hardening layer under outstripping superficial plastic deforming. Vestnik of the Samara State Aerospace University. 2012. No. 3 (34), part 3. P. 172-176. (In Russ.)
- Kirpichev V.A., Saushkin M.N., Sazanov V.P., Semyonova O.Yu. Residual stresses and endurance strength in the specimens with V-shaped notches made of ВНС40 steel. Vestnik of the Samara State Aerospace University. 2012. No. 5 (36), part 1. P. 95-99. (In Russ.)
- Kirpichyov V.A., Bukaty A.S., ChirkovA.V. Anticipating fatigue resistance of surface hardened smooth parts. University proceedings. Volga region. Technical sciences. 2012. No. 3 (23). P. 102-109. (In Russ.)
- Kirpichev V.A., Filatov A.P., Karanaeva O.V., Chirkov A.V., Semenova O.Yu. Surface hardened parts endurance limit prediction under stresses concentration various degree. Proceedings of the International Conference «Strength of Materials and Structural Elements». Kiev: G.S. Pisarenko Institute for Problems of Strength of the National Academy of Sciences of Ukraine Publ., 2011. P. 678-685. (In Russ.)
- Kirpichev V.A., Bukatyi A.S., Filatov A.P., Chirkov A.V. Prediction of the endurance limit of superficially strengthened details at various degree of stress concentration. Vestnik UGATU. 2011. V. 15, no. 4 (44). P. 81-85. (In Russ.)
- Vakuljuk V.S. Investigation of influence of thickness hardened layer on the redisiual stresses in basin concentrator using initial strain. Journal of Samara State Technical University. Seriya: Physical and Mathematical Sciences. 2010. No. 1 (20). P. 222-225. (In Russ.)
- Ivanov S.I. K opredeleniyu ostatochnykh napryazheniy v tsilindre metodom kolets i polosok. Sb. trudov «Ostatochnye napryazheniya». Iss. 53. Kuibyshev: Kuibyshev Aviation Institute Publ., 1971. P. 32-42. (In Russ.)
- Chirkov A.V., Sazanov V.P., Samoylov V.A., Larionova Y.S. Modeling of redistribution of residual stresses in the cylindrical specimens after advancing surface plastic forming. Vestnik of the Samara State Aerospace University. 2011. No. 3 (27), part 3. P. 171-174. (In Russ.)
- Pavlov V.F., Stolyarov A.K., Vakulyuk V.S., Kirpichev V.A. Raschet ostatochnykh napryazhenii v detalyakh s kontsentratorami napryazhenii po pervonachal'nym deformatsiyam [Residual stresses calculation in parts with stress concentrators on initial deformations]. Samara: Samarskiy Nauchnyy Tsentr RAN Publ., 2008. 124 p.
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