Certificate of Registration Media number Эл #ФС77-53688 of 17 April 2013. ISSN 2308-6033. DOI 10.18698/2308-6033
  • Русский
  • Английский

Creep of heat-resistant low-alloy cast iron during bending and sheering

Published: 06.12.2018

Authors: Buketkin B.V., Semenov-Ezhov I.E., Shirshov A.A.

Published in issue: #12(84)/2018

DOI: 10.18698/2308-6033-2018-12-1829

Category: Mechanics | Chapter: Dynamics, Strength of Machines, Instruments, and Equipment

Heat-resistant low-alloy cast iron is widely used in modern transport diesel engines to produce heavy loaded cylinder-piston group parts operating under variable load conditions. Despite their short duration, high temperatures cause development of irreversible creeping deformation in such details. As a result, when the engine stops these details suffer from residual tensile stress. To calculate the level of residual stress, it is necessary to have a conditional equation suitable for calculations which take creep at variable temperatures and voltages into account. Applying a theoretical solution, we examined the adequacy of a conditional equation received from tension and compression test results by comparing the results of the specimen tests with pure bending and pure shearing. The possibility of using a conditional equation to conduct calculations for details from heat-resistant cast iron in creep conditions is confirmed

[1] Rabotnov Yu.N. Polzuchest elementov konstruktsiy [Creep of structural elements]. 2nd ed., stereotyp. Moscow, Nauka Publ., 2014, 712 p.
[2] Khazhinskiy G.M. Modeli deformirovaniya i razrusheniya metallov [Models of deformation and fracture of metals]. Moscow, Nauchnyy mir Publ., 2011, 231 p.
[3] Buketkin B.V., Shirshov А.А. Zavodskaya laboratoriya. Diagnostika materialov — Industrial laboratory. Diagnostics of materials, 2015, vol. 81, no. 4, pp. 56–58.
[4] Zakharova T.E. Vestnik SibGUTI — The Herald of SibSUTIS, 2008, no. 2, pp. 41–44.
[5] Lokoschenko А.M., Аgakhi K.А., Fomin L.V. Vestnik samarskogo gosudarstvennogo tekhnicheskogo universiteta. Seriya: Fiziko-matematicheskie nauki — Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences, 2012, no. 1 (26), pp. 66–73.
[6] Kuznetsov E. B., Leonov S. S. Vestnik yuzhno-uralskogo gosudarstvennogo universiteta. Seriya: Matematicheskoe modelirovanie i programmirovanie — Bulletin of the South Ural State University. Ser. Mathematical Modelling, Programming & Computer Software, 2013, vol. 6, no. 4, pp. 26–38.
[7] Nazarov V.V. Determination of creep properties under tension and torsion of copper tubular specimens. Inorganic Materials, 2014, vol. 50, no. 15, pp. 1514–1515.
[8] Banshchikova I.A., Petrov D.M., Tsvelodub I.Y. Torsion of circular rods at anisotropic creep. Journal of Physics: Conference Series, 2016, vol. 722, no. 1, 012004.