Production, Properties and Application of Ultrafine-Grained Titanium Alloys

Abstract:

Some features ofstructure, way of production and mechanical properties of titanium andtwo-phase titanium alloys with ultrafine-grained (UFG) microstructure werediscussed. Various methods of UFG structure formation was considered andoptimal conditions for attaining of a homogeneous microstructure with thesmallest grain size were determined. The kinetics of microstructure evolutionin titanium and two-phase titanium alloys during large (severe) plasticdeformation in a wide temperature interval and the mechanisms of ultrafinegrain formation were analyzed. The influence of grain size on static mechanicalproperties was determined. Significantly reduced temperatures of superplasticforming of the UFG conditions were shown. Some examples of practical applicationsof the UFG two-phase titanium alloys were discussed.

• Periodical: Materials Science Forum (Volumes 838-839)
• Pages: 294-301
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.838-839.294
• Online since: January 2016
• Authors: Sergey Zherebtsov*, Gennady Salishchev
• Keywords: Large Strain, Low-Temperature Superplasticity, Mechanical Properties, Microstructure Evolution, Titanium, Titanium Alloys, Ultrafine-Grained Structure

References

[1] M.A. Meyers, A. Mishra, D.J. Benson, Mechanical properties of nanocrystalline materials, Progr. Mater. Sci. 51 (2006) 427–556.

[2] O.A. Kaibyshev, Superplasticity of Alloys, Intermetallides and Ceramics, Springer-Verlag, Berlin, (1992).

[3] G.A. Salishchev, E.A. Kudrjavtsev, S.V. Zherebtsov, S.L. Semiatin, Mater. Sci. Forum, 735 (2013) 253-257.

[4] D.A. Hughes, N. Hansen, Microstructure and strength of nickel at large strains, Acta Mater. 48 (2000) 2985-3004.

DOI: 10.1016/s1359-6454(00)00082-3

[5] F. Humphreys, M. Hatherly, Recrystallization and Related Annealing Phenomena, Elsevier, Oxford, (2004).

[6] T. Sakai, A. Belyakov, R. Kaibyshev, H. Miura, J.J. Jonas, Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions, Progr. Mater. Sci. 60 (2014) 130–207.

DOI: 10.1016/j.pmatsci.2013.09.002

[7] A. Belyakov, S. Zherebtsov, G. Salishchev, Three-stage relationship between flow stress and dynamic grain size in titanium in wide temperature interval, Mater. Sci. Eng. A628 (2015) 104-109.

DOI: 10.1016/j.msea.2015.01.036

[8] S.V. Zherebtsov, G.S. Dyakonov, A.A. Salem, V.I. Sokolenko, G.A. Salishchev, S.L. Semiatin, Formation of nanostructures in commercial-purity titanium via cryo-rolling, Acta Mater. 61 (2013) 1167-1178.

DOI: 10.1016/j.actamat.2012.10.026

[9] G. Salishchev, S. Mironov, S. Zherebtsov, A. Belyakov, Changes in misorientations of grain boundaries in titanium during deformation, Mater. Charact. 61 (2010) 732-739.

DOI: 10.1016/j.matchar.2010.04.005

[10] S.V. Zherebtsov, G.A. Salishchev, R.M. Galeyev, O.R. Valiakhmetov, S. Yu. Mironov, S.L. Semiatin, Production of submicrocrystalline structure in large-scale Ti-6Al-4V billet by warm severe deformation processing, Scripta Mater. 51 (2004).

DOI: 10.1016/j.scriptamat.2004.08.018

[11] S. Zherebtsov, M. Murzinova, G. Salishchev, S.L. Semiatin, Spheroidization of the lamellar microstructure in Ti–6Al–4V alloy during warm deformation and annealing, Acta Mater. 59 (2011) 4138-4150.

DOI: 10.1016/j.actamat.2011.03.037

[12] S. Zherebtsov, G. Salishchev, S.L. Semiatin, Loss of coherency of the alpha/beta interface boundary in titanium alloys during deformation, Phil. Mag. Letters 90 (2010) 903-914.

DOI: 10.1080/09500839.2010.521526

[13] M. Cabibbo, S. Zherebtsov, S. Mironov, G. Salishchev, Loss of coherency and interphase α/β angular deviation from the Burgers orientation relationship in a Ti-6Al-4V alloy compressed at 800°C, J. Mater. Sci. 48 (2013) 1100-1110.

DOI: 10.1007/s10853-012-6842-z

[14] S.L. Semiatin, D.U. Furrer, ASM Handbook, vol. 22. Fundamentals of Modeling for Metals Processing. Materials Park, OH: ASM International; (2009).

[15] S. Zherebtsov, W. Lojkowski, A. Mazur, G. Salishchev, Structure and properties of hydrostatically extruded commercially pure titanium, Mater. Sci. Eng. A527 (2010) 5596-5603.

DOI: 10.1016/j.msea.2010.05.043

[16] S. Zherebtsov, E. Kudryavtsev, S. Kostjuchenko, S. Malysheva, G. Salishchev, Strength and ductility-related properties of ultrafine grained two-phase titanium alloy produced by warm multiaxial forging, Mater. Sci Eng. 536A (2012) 190-196.

DOI: 10.1016/j.msea.2011.12.102