Evaluation of the deformability of a titanium alloy in isothermal forming

Authors

DOI:

https://doi.org/10.20535/2521-1943.2020.89.204865

Keywords:

method for assessing the deformability of alloys, isothermal plastic forming, OT4-0 titanium alloy, Normalized Cockcroft-Latham criteria

Abstract

A method for assessing the deformability of metals and alloys under isothermal shaping based on biaxial tensile tests during membrane shaping has been developed and justified. The technical implementation of the method is completed.

An installation for the forming of membranes by pressure of a gaseous medium – argon gas from a sheet material in isothermal conditions at hot plastic deformation temperatures was developed.

The results of studies of sheet blanks from OT4-0 titanium alloy at temperature made it possible to establish the dependence of the limiting strain on the strain temperature in the range of 820-850 оC.

It is shown that the results of the obtained ultimate strains can be used in the Normalized Cockcroft-Latham criterion for numerical calculations of plastic shaping in isothermal conditions.

References

  1. Baryshnikov, M.P., Chukin, M.V., Boiko, A.B. and Il'ina, N.N. (2014), “K voprosu vybora kriteriev razrusheniya pri matematicheskom modelirovanii protsessov obrabotki davleniem v sovremennykh programmnykh kompleksakh”, Obrabotka sploshnykh i sloistykh materialov, vol. 40, no.1, pp. 48–55.
  2. Baryshnikov, M.P., Chukin, M.V. and Boiko, A.B. (2012), “Analiz programmnykh kompleksov dlya rascheta napryazhenno-deformirovanogo sostoyaniya kompozitsionnykh materialov v protsessakh obrabotki davleniem”, Vestnik magnitogorskogo GTU im. G.Ts. Nosova, no. 4, pp. 72–74.
  3. Dolgii, D.K., Korchunov, A.G. and Baryshnikov, M.P. (2012), “Modelirovanie protsessa stabilizatsii vysokoprochnoi kholodnodeformirovannoi armatury”, Vestnik magnitogorskogo GTU im. G.Ts. Nosova, no. 2, pp. 43–47.
  4. Guntram, R. (2006), “Modeling ductile damage of a Ni-base alloy considering the microstructure evolution during hot working”. Steel Grips, Journal of steel and Related Materials, no. 4, pp. 56–63.
  5. Orlyuk, M.V. (2017), “Granichnі znachennya kriterіїv ruinuvannya pri modelyuvannі protsesіv vityaguvannya v seredovishchі DEFORM”, Obrabotka materialov davleniem, Kramatorsk, vol. 45, no. 2, pp. 22–29. https://ela.kpi.ua/handle/123456789/27990
  6. Bao, Y.A. and Wierzbicki, T. (2004), “Comparative study on various ductile crack formation criteria”, J Eng Mater Technol., no. 126, pp. 314–324.
  7. Bao, Y.A. and Wierzbicki, T. (2004), “On fracture locus in the equivalent strain and stress triaxiality space”, International Journal of Mechanical Sciences, vol. 46, no. 1, pp. 81–98.
  8. Mikhalevich, V.M., Dobranyuk, Yu.V. and Kraєvs'kii, V.O. (2018), “Porіvnyal'ne doslіdzhennya modelei granichnikh plastichnikh deformatsіi”, [Tekst], Vіsnik mashinobuduvannya ta transport, no. 2, pp. 56–64.http://nbuv.gov.ua/UJRN/vmbt_2018_2_9
  9. Tomlenov, A.D. (1958), “Teoriya gidrostaticheskogo ispytaniya listovogo metalla”, Vestnik mashinostroeniya, no. 10,
  10. pp. 47–49.
  11. Hill, R. (1950), “Theory of the Plastic Bulging of the Metal Diaphragm by Lateral Pressure”, Philosophical Magazine, vol. 41, pp. 1133–1144.
  12. Isachenkov, E.I. (1967), Shtampovka rezinoi i zhidkost'yu, Mashinostroenie, Moscow, Russia.
  13. Smirnov-Alyaev, G.A. (1972), Eksperimental'noe issledovanie v obrabotke metallov davleniem, Mashinostroenie, Moscow, Russia.
  14. Kolesnikov, A.V. A.A. Cheslavskaya, A.K. Shmakov (2015), “Opredelenie pokazatelei sverkhplastichnosti titanovogo splava OT4-1”, Vestnik IrGTU, vol. 105, no. 10, pp. 57–61.
  15. Shorshorov, M.Kh. (1973), Sverkhplastichnost' metallicheskikh materialov, Nauka, Moscow, Russia.

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Published

2020-09-01

How to Cite

[1]
Garanenko Т. R. and Titov А. V., “Evaluation of the deformability of a titanium alloy in isothermal forming”, Mech. Adv. Technol., no. 2(89), Sep. 2020.

Issue

No. 2(89) (2020)

Section

Up-to-date machines and the technologies of mechanical engineering

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