Influence of the grain boundary state on the plasticization effect in ultrafine-grained Al-0.4Zr alloy
Mavlyutov A. M.1,2, Orlova T. S. 1, Murashkin M. Yu.1,3, Enikeev N. A.3
1Ioffe Institute, St. Petersburg, Russia
2St. Petersburg State University, St. Petersburg, Russia
3Ufa University of Science and Technology, Ufa, Russia
Email: aydarmavlyutov@mail.ioffe.ru, orlova.t@mail.ioffe.ru

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The influence of small additional deformation by cold rolling (CR) on the microstructure and mechanical properties of ultrafine-grained (UFG) Al-0.4Zr alloy structured by high pressure torsion (HPT) has been studied. The results are compared with the application of small additional deformation by HPT, which, after low-temperature annealing, leads to a substantial increase in ductility (plasticization effect) with small decrease in strength. It is shown that, in contrast to the additional deformation of HPT, the deformation of CR after intermediate low-temperature annealing leads to a sharp drop in plasticity to ~2%, while the strength increases to ~275 MPa. The key role of the nonequilibrium state of grain boundaries in the manifestation of the plasticization effect in the UFG Al-0.4Zr alloy is revealed. A new approach is proposed for simultaneously increasing the strength and ductility of the UFG Al-0.4Zr alloy due to a small additional deformation by CR without intermediate annealing. As a result of this approach, a significant increase in strength by ~30% (ultimate tensile strength ~223 MPa) was achieved with a simultaneous increase in ductility up to ~26%, which is associated with an increase in the strain hardening rate due to an increase in the density of lattice dislocations in the UFG structure with nonequilibrium grain boundaries. The strain rate sensitivity and strain hardening coefficients have been determined for the UFG Al-0.4Zr alloy in various states. Keywords: aluminum-zirconium alloys, severe plastic deformation, ultrafine-grained structure, annealing-induced hardening, deformation-induced softening.
  1. D.I. Belyi. Kabeli i provoda 332, 1, 8 (2012). (in Russian). https://www.elibrary.ru/item.asp?id=18852363
  2. F.R. Ismagilov, R.G. Shakirov, N.K. Potapchuk, T.Yu. Volkov. Osnovnye voprosy proektirovaniya vozdushnykh linii elektroperedach. Uch. posobie. 2-e izd. Mashinostroenie, M. (2015). 211 p. (in Russian)
  3. R.Z. Valiev, A.P. Zhilyaev, T.G. Langdon, Ob'emnyie nanostrukturnye materialy: fundamental'nye osnovy i primeneniya. Eko-Vektor, SPb (2017). 479 p. (in Russian)
  4. I.A. Ovid'ko, R.Z. Valiev, Y. T. Zhu. Prog. Mater. Sci. 94, 462 (2018). https://doi.org/10.1016/j.pmatsci.2018.02.002
  5. K.E. Knipling, D.C. Dunand, D.N. Seidman. Acta Mater. 56, 1, 114 (2008). https://doi.org/10.1016/j.actamat.2007.09.004
  6. N.A. Belov, A.N. Alabin, A.R. Teleuova. Met. Sci. Heat Treat. 53, 455 (2012). https://doi.org/10.1007/s11041-012-9415-5
  7. W.W. Zhou, B. Cai, W.J. Li, Z.X. Liu, S. Yang. Mater Sci. Eng. A 552, 353 (2012). https://doi.org/10.1016/j.msea.2012.05.051
  8. N.A. Belov, N.O. Korotkova, T.K. Akopyan, V.N. Timofeev. JOM 72, 4, 1561 (2020). https://doi.org/10.1007/s11837-019-03875-0
  9. D.S. Voroshilov, M.M. Motkov, S.B. Sidelnikov, R.E. Sokolov, A.V. Durnopyanov, I.L. Konstantinov, V.M. Bespalov, T.V. Bermeshev, I.S. Gudkov, M.V. Voroshilova, Y.N. Mansurov, V.A. Berngardt. Int. J. Lightweight Mater. 5, 3, 352 (2022). https://doi.org/10.1016/j.ijlmm.2022.04.002
  10. T.A. Latynina, A.M. Mavlyutov, M.Yu. Murashkin, R.Z. Valiev, T.S. Orlova. Phil. Mag. 99, 19, 2424 (2019). https://doi.org/10.1080/14786435.2019.1631501
  11. T.S. Orlova, T.A. Latynina, A.M. Mavlyutov, M.Y. Murashkin, R.Z. Valiev. J. Alloys Compd. 784, 41 (2019). https://doi.org/10.1016/j.jallcom.2018.12.324
  12. M.Yu. Murashkin, A.E. Medvedev, V.U. Kazykhanov, G.I. Raab, I.A. Ovid'ko, R.Z. Valiev. Rev. Adv. Mater. Sci. 47, 16 (2016). https://www.ipme.ru/e-journals/RAMS/ no_14716/03_14716_murashkin.pdf
  13. T.S. Orlova, T.A. Latynina, M.Yu. Murashkin, V.U. Kazykhanov. FTT 61, 12, 2447 (2019). (in Russian). https://doi.org/10.21883/FTT.2019.12.48582.558
  14. A. Mohammadi, N.A. Enikeev, M.Yu. Murashkin, M. Arita, K. Edalati. Acta Mater. 203, 116503 (2021). https://doi.org/10.1016/j.actamat.2020.116503
  15. T.S. Orlova, A.M. Mavlyutov, M.Y. Murashkin, N.A. Enikeev, A.D. Evstifeev, D.I. Sadykov, M.Yu. Gutkin. Materials 15, 23, 8429 (2022). https://doi.org/10.3390/ma15238429
  16. A.M. Mavlyutov, T.A. Latynina, M.Yu. Murashkin, R.Z. Valiev, T.S. Orlova. FTT 59, 10, 1949 (2017). (in Russian). http://dx.doi.org/10.21883/FTT.2017.10.44964.094
  17. T.S. Orlova, N.V. Skiba, A.M. Mavlyutov, M.Yu. Murashkin, R.Z. Valiev, M.Yu. Gutkin. Rev. Adv. Mater. Sci. 57, 2, 224 (2018). https://doi.org/10.1515/rams-2018-0068
  18. N.V. Skiba, T.S. Orlova, M.Yu. Gutkin. Phys. Solid State 62, 11, 2094 (2020). https://doi.org/10.1134/S1063783420110347
  19. I. Sabirov, Y. Estrin, M.R. Barnett, I. Timokhina, P.D. Hodgson. Scr. Mater. 58, 3, 163 (2008). https://doi.org/10.1016/j.scriptamat.2007.09.057
  20. G.K. Williamson, R.E. Smallman. Phil. Mag. 1, 1, 34 (1956). https://doi.org/10.1080/14786435608238074
  21. W. Lefebvre, N.V. Skiba, F. Chabanais, M.Yu. Gutkin, L. Rigutti, M.Yu. Murashkin, T. S. Orlova. J. Alloys Compd., 862, 5, 158455 (2021). https://doi.org/10.1016/j.jallcom.2020.158455
  22. T.S. Orlova, D.I. Sadykov, D.A. Kirilenko, A.I. Lihachev, A.A. Levin. Mater. Sci. Eng. A 875, 145122 (2023). https://doi.org/10.1016/j.msea.2023.145122
  23. G.E. Dieter. Mechanical Metallurgy. McGraw-Hill, Boston (1961). 615 p
  24. N.Q. Chinh, T. Csanadi, T. Gyori, R.Z. Valiev, B.B. Straumal, M. Kawasaki, T.G. Langdon. Mater. Sci. Eng. A 543, 117 (2012). https://doi.org/10.1016/j.msea.2012.02.056
  25. K.V. Ivanov, E.V. Naydenkin. Mater. Sci. Eng. A 23, 8429 (2022). https://doi.org/10.3390/ma15238429
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