Residual stress optimization of technological processes with the aim of ensuring adhesion of nickel or chromium coatings on parts made of titanium alloys

Abstract

Work on ensuring adhesion of chromium coating on parts “piston with a rod” made of ВТ3-1, ВТ22 titanium alloys was carried out based on the examination of residual stresses. Ensuring the adhesion of coats was conducted in two stages: at the first stage strengthening treatment was used, and at the second stage optimization of grinding conditions by residual stresses was carried out. A method of predicting process-induced residual deformation by equivalent initial stresses is presented. Residual stresses in a surface layer of specimens cut out of the strengthened parts were studied. It was established that compressive residual stresses in the surface layer ensure the coating adhesion in chromium plating of parts made of titanium alloys. It was shown that ensuring adhesion of coatings on parts made of titanium alloys can be obtained both by strengthening treatment and without it, due to the optimization of grinding conditions. The results obtained made it possible to eliminate surface tempering in the process of grinding parts made of titanium alloys, to ensure  favorable technological heredity not only for the parts under examination, but for other parts such as pistons, hydraulic cylinders and rods.

About the authors

A. S. Bukaty

Samara National Research University

Author for correspondence.
Email: bukaty@inbox.ru

Candidate of Science (Engineering)
Associate Professor of the Department of Strength of Materials

Russian Federation

References

  1. Bukaty A.S., Bukatyy S.A., Leshin D.P., Okrugin A.A. Sovershenstvovanie konstruktsii i tekhnologii izgotovleniya otvetstvennykh detaley GTD na osnove energeticheskogo metoda i issledovaniya zhestkosti napryazhennogo sostoyaniya. Sb. materialov IV mezhdunarodnoy nauchno-tekhnicheskoy konferentsii «Naukoemkie tekhnologii v mashinostroenii i aviadvigatelestroenii (TM-2012)». Part 1. Rybinsk: Rybinsk State Aviation Technical University Publ., 2012. P. 308-312. (In Russ.)
  2. Bukaty S.А., Semenchenko I.V. Buckling and size stability of low-hard thin-walled parts in gas turbine engines production. Vestnik Mashinostroeniya. 1994. No. 10. P. 32-37. (In Russ.)
  3. Birger I.A. Ostatochnye napryazheniya [Residual stresses]. Moscow: Gosudarstvennoe Nauchno-tekhnicheskoe Izdatel'stvo Mashinostroitel'noy Literatury Publ., 1963. 232 p.
  4. Ovseenko A.N. Tekhnologicheskie osnovy metodov snizheniya ostatochnykh deformatsiy i obespecheniya kachestva obrabotki vysokonagruzhennykh detaley energomashin [Process basis for methods of reducing residual deformations and ensuring high quality of treatment of high-load parts of energy machines. Extended abstract of doctoral dissertation (Engineering)]. Moscow, 1986. 32 p.
  5. Bukaty S.A. Prognozirovanie korobleniya detaley GTD posle obrabotki poverkhnosti na osnove issledovaniya ostatochnogo napryazhennogo sostoyaniya materiala [Prediction of gas turbine engine parts’ buckling after surface treatment on the basis of examination of the residual stress state of the material. Extended abstract of doctoral dissertation (Engineering)]. Rybinsk, 1996. 28 p.
  6. Bukaty S.A. Obshchiy podkhod k opredeleniyu ostatochnykh deformatsiy detaley posle uprochneniya poverkhnostnym i ob"emnym plasticheskim deformirovaniem. Sbornik tezisov dokladov respublikanskoy nauchno-tekhnicheskoy konferentsii «Povyshenie kachestva detaley mashin plasticheskim deformirovaniem». Frunze, 1988. P. 88-90.
  7. Bukaty S.A., Bukatyy A.S. Avtomatizirovannaya Sistema opredeleniya ostatochnykh napryazheniy. Trudy XXXVIII Ural'skogo seminara «Mekhanika i protsessy upravleniya». V. 1. Yekaterinburg: Ural Branch of the Russian Publ., 2008. P. 191-194. (In Russ.)

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