Kinetic Modeling of the Deformation Behavior of High-Strength Nanostructured Al-Mg Alloys

Abstract:

Article Preview

Basing on the kinetic modeling, the role of microstructure peculiarities in formation of a revealed experimentally high-strength state of the nanostructured Al 6061 (Mg 0.8…1.2, Si 0.4…0.8, Cu 0.15…0.40, Cr 0.15…0.35, Mn 0.15, Fe 0.7, Zn 0.25, Ti 0.15 wt. %) alloy was analyzed, Possible strengthening mechanisms of the alloy subjected to high pressure torsion at room temperature have been considered. It has been shown that the grain size and segregation of Si, Cu and Mg atoms from the solid solution in the grain boundaries area are the main factors that enhance the alloy strength. Conclusions on the deformation mechanisms acting in the considered alloy have been made. They can be helpful for predicting the mechanical properties of materials. Quantitative estimation of the dislocation density, the stress of dislocation strengthening, and the stress of dislocation pinning by Mg atoms has been made.

Info:

Periodical:

Edited by:

Yonghao Zhao

Pages:

203-211

Citation:

I. V. Alexandrov et al., "Kinetic Modeling of the Deformation Behavior of High-Strength Nanostructured Al-Mg Alloys", Materials Science Forum, Vol. 683, pp. 203-211, 2011

Online since:

May 2011

Export:

Price:

$38.00

[1] M. Yu. Murashkin, A.R. Kil'mametov, R.Z. Valiev: The Physics of Metals and Metallography Vol. 106 (2008), p.90.

[2] G. Nurislamova, X. Sauvage, M. Murashkin et al.: Phil. Mag. Letters Vol. 88 (2008), p.459.

[3] H. Konrad, in: Ultrafine-Grain Metals, edited by J. J. Burke and V. Weiss, Syracuse University Press, Syracuse, NY (1970).

[4] R.W. Armstrong, in: Ultrafine-Grain Metals, edited by J. J. Burke and V. Weiss, Syracuse University Press, Syracuse, NY (1970).

[5] G.А. Маlygin: Solid State Physics Vol. 49 № 6 (2007), p.961.

[6] G.А. Маlygin: Solid State Physics Vol. 47 № 2 (2005), p.236.

[7] I.V. Alexandrov, R. G Chembarisova: Rev. Adv. Mater. Sci. Vol. 16 (2007), p.51.

[8] M. Zehetbauer: Acta mater. Vol. 41 (1993), p.589.

[9] Y. Estrin, L.S. Tóth, A. Molinari, Y. A. Bréchet: Acta mater. Vol. 46 № 15 (1998), p.5509.

[10] O. Sitdikov, T. Sakai, E. Avtokratova, R. Kaibyshev, K. Tsuzaki, Y. Watanabe: Acta Mater. Vol. 56 (2008), p.821.

DOI: https://doi.org/10.1016/j.actamat.2007.10.029

[11] W.A. Curtin, D.L. Olmsted, L.G. Hector Jr.: Nature materials Vol. 5 (2000), p.875.

[12] A. Kelly, R. Nicholson: Precipitation Hardening (Progress in Materials Science, Pergamon Press, London, 1963).

[13] P. Ambrosi, W. Homeier, Ch. Schwink: Scripta Met. Vol. 14 (1980), p.183.

[14] B.I. Smirnoff: Dislocation Structure and Crystal Hardening (Science, Leningrad 1981).

[15] G.А. Маlygin: Phys. Stat. Sol. Vol. 37 (1995), p.3.

[16] G.А. Маlygin: Solid State Physics Vol. 34 № 10 (1992), p.3200.

[17] F.B. Prinz, A.S. Argon: Acta Metall. Vol. 32 № 7 (1984), p.1021.

[18] R. Berner, G. Kronmuller: Plastic deformation of monocrystals (Mir, Moscow, 1969).

[19] I.I. Novikov: Crystallography and defects in a crystalline lattice (Metallurgia, Moscow, 1990).

[20] R.Z. Valiev, V. Yu. Gertsman, O.A. Kaibyshev, Sh.K. Khannanov: Phys. Stat. Sol. (a) Vol. 78 (1983), p.177.

DOI: https://doi.org/10.1002/pssa.2210770111

[21] S.M. Klotsman: Physical Science Success Vol. 160 (1990), p.99.

[22] A.D. Le Kler : Diffusion in Metals with a Body – Centered Cubic Lattice (Metallurgia, Moscow, 1969).

[23] P.G. Sanders, A.B. Withey , J.R. Weertman, et. al.: Mater. Sci. Eng., A Vol. 204 (1995), p.7.

[24] V.V. Rybin: Large plastic deformations and failure of metals (Metallyrgy, Moscow, 1986).

[25] M.A. Shtremel: Strength of alloys. Part II. Deformation (MISIS, Moscow, 1997).

[26] R. L. Fleischer, W. Hibbard, in: The relation between the structure and Mechanical Properties of Metals Teddington, London (1963).

[27] M. Fine, in: The relation between the structure and Mechanical Properties of Metals, Teddington, London (1963).

[28] W.J. Kim, T.J. Park et al.: Metall. Mater. Trans. A Vol. 33 (2002), p.3155.

[29] H. Conrad: Mater. Sci. Eng. A V. 341 (2003), p.216.

Fetching data from Crossref.
This may take some time to load.