Investigation of Defect Dynamics in Al-Si-Mg Polycrystals by Simultaneous Measurements of Internal Friction and Acoustoplastic Effect

Abstract:

Dynamics of structural defects was investigated in situ during quasistatic deformation of polycrystalline Al-1wt.%Si-0.3wt.%Mg and Al-12wt.%Si-0.3wt.%Mg alloys by means of simultaneous measurements of internal friction and acoustoplastic effect. The alloys were subjected to different heat treatments after quenching: natural ageing at room temperature (T4 treatment) and peak ageing at 433 K for 8 hrs (T6 treatment). This enabled us to study the effect of different microstructure components – solute clusters (for the T4 treatment), GP zones and β (( precipitates (for the T6 treatment), coarse Si particles (for Al-12wt.%Si-0.3wt.%Mg) – on the irreversible and reversible components of dislocation motion under the combined action of oscillatory and quasistatic stress. Based on the data obtained, conclusions have been drawn about microstructural mechanisms of the acoustoplastic effect.

• Periodical: Solid State Phenomena (Volume 184)
• Pages: 155-160
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.184.155
• Online since: January 2012
• Authors: K. Sapozhnikov, S. Golyandin, Sergey Kustov
• Keywords: Acoustoplastic Effect, Aluminium Alloy, Dislocation, Internal Friction

References

[1] Mechanical Spectroscopy Q-1 2001 with Applications to Materials Science, edited by R. Schaller, G. Fantozzi and G. Gremaud, Trans Tech Publications, Switzerland (2001).

[2] A.B. Lebedev: Phys. Solid State Vol. 35 (1993), p.1141.

[3] L. Archbutt: Trans. Faraday Soc. Vol. 17 (1921), p.22.

[4] F. Blaha and B. Langenecker: Naturwissenschaften Vol. 42 (1955), p.556.

[5] K.V. Sapozhnikov and S.B. Kustov: Phys. Solid State Vol. 38 (1996), p.1513.

[6] K.V. Sapozhnikov and S.B. Kustov: J. Physique IV Vol. 6 (1996), p. C8-293.

[7] K.V. Sapozhnikov and S.B. Kustov: Phys. Solid State Vol. 39 (1997), p.1601.

[8] K.V. Sapozhnikov and S.B. Kustov: Phil. Mag. A Vol. 76 (1997), p.1153.

[9] K.V. Sapozhnikov, S.N. Golyandin, S.B. Kustov, Y. Nishino and S. Asano: Phil. Mag. A Vol. 77 (1998), p.151.

[10] G.A. Edwards, K. Stiller, G.L. Dunlop and M.J. Couper: Acta Mater. Vol. 46 (1998), p.3893.

[11] M. Murayama, K. Hono, M. Saga and M. Kikuchi: Mater. Sci. Eng. A Vol. A250 (1998), p.127.

[12] M. Murayama and K. Hono: Acta Mater. Vol. 47 (1999), p.1537.

[13] W.F. Miao and D.E. Laughlin: Scripta Mater. Vol. 40 (1999), p.873.

[14] A.K. Gupta, D.J. Lloyd and S.A. Court: Mat. Sci. Eng. A Vol. A301 (2001), p.140.

[15] G. Gremaud, S. Kustov and Ø. Bremnes, see p.652 in Ref.

[1] .

[16] R.H. Chambers and R. Smoluchowski: Phys. Rev. Vol. 117 (1960), p.725.

[17] V.A. Chelnokov and N.L. Kuz'min: Soviet Phys. Solid State Vol. 24 (1982), p.1796.

[18] S.B. Kustov, J. Van Humbeeck, I. Hurtado, S. Golyandin and R. De Batist, in: M3D III: Mechanics and Mechanisms of Material Damping, edited by A. Wolfenden and V.K. Kinra, ASTM, Philadelphia, PA (1997), p.94.

DOI: 10.1520/stp11741s

[19] K. Sapozhnikov, S. Golyandin, S. Kustov, J. Van Humbeeck and R. De Batist: Acta Mater. Vol. 48 (2000), p.1141.

DOI: 10.1016/s1359-6454(99)00374-2

[20] S. Kustov, S. Golyandin, K. Sapozhnikov, E. Cesari, J. Van Humbeeck and R. De Batist: Acta Mater. Vol. 50 (2002), p.3023.

DOI: 10.1016/s1359-6454(02)00131-3

[21] K. Sapozhnikov, S. Golyandin and S. Kustov: Composites A Vol. 40 (2009), p.105.

[22] A.N. Orlov, V.N. Perevesentsev and B.I. Smirnov: Phys. Stat. Sol. (a) Vol. 32 (1975), p.35.

[23] T.S. Orlova, B.I. Smirnov, V.A. Stepanov and V.V. Shpeizman: Soviet Phys. Solid State Vol. 24 (1982), p.623.