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Dynamic Grain and Particle Growth in a Non-Superplastic Al-4Cu Alloy

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Abstract:

The effect of deformation on the microstructure of a Al-4wt.%Cu alloy has been investigated. Evaluation of the microstructural changes was made by comparing results after both static annealing and tensile testing (deformed and non-deformed regions) at 450 °C. Uniaxial perturbed-rate tests showed that the Al-4wt.%Cu has a low value of the strain rate sensitivity index (m ~ 0.22) and cannot be considered as a superplastic material. It was found that in the deformed regions, specimens showed a significant increase in the grain and particle size. These changes were accompanied by an increase in the aspect ratio of the matrix grains. Tensile tests carried out at constant strain rates and stopped at intermediate strains helped to estimate the rate of the grain and particle growth and the contribution of deformation to it. To examine in detail the mechanism of the particle coarsening during deformation, additional tensile tests were made using the Al-4wt.%Cu alloy annealed at temperature conditions leading to abnormal grain size. Results of these tests also showed strain-induced particle coarsening, so that dynamic particle coarsening was not simply caused by boundary migration effects.

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

797-802

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.797

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Online since:

October 2007

Authors:

Oleg V. Rofman, Pete S. Bate

Keywords:

Deformation, Dynamic Grain Growth, Particle Coarsening, Zener Pinning

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] K. Holm, J.D. Embury and G.R. Purdy: Acta Metall. Vol. 25 (1977), p.1191.

Google Scholar

[2] D.S. Wilkinson and C.H. Cáceres: Acta Metall. Vol. 32 (1984), p.1335.

Google Scholar

[3] M. Kh. Rabinovich and V.G. Trifonov: Acta. Mater. Vol. 44 (1996), p. (2073).

Google Scholar

[4] Byung-Nam Kim, Keijiro Hiraga, Yoshio Sakka and Byung-Wook Ahn: Acta Mater. Vol. 47 (1999), p.3433.

Google Scholar

[5] J.R. Seidensticker and M.J. Mayo: Acta Mater. Vol. 46 (1998), p.4883.

Google Scholar

[6] P. Bate: Acta Mater. Vol. 49 (2001), p.1453.

Google Scholar

[7] P. Bate and L. Mackenzie: in Recrystallization and Grain Growth, Eds. G. Gottstein and D.A. Molodov, Springer, Berlin (2001), p.269.

Google Scholar

[8] P.S. Bate, K.B. Hyde, S.A. Court and F.J. Humphreys: Mater. Sci. Forum Vol. 447-448 (2004), p.61.

Google Scholar

[9] K.B. Hyde and P.S. Bate: Mater. Sci. Forum Vol. 447-448 (2004), p.79.

Google Scholar

[10] K.B. Hyde and P.S. Bate: Acta. Mater. Vol. 53 (2005), p.4313.

Google Scholar

[11] E. Nes: Met. Sci. Vol. 13 (1979), p.211.

Google Scholar

[12] G. Piatti and T. Stoto: J. Mater. Sci. Letters Vol. 3 (1984), p.1020.

Google Scholar

[13] S.V. Prikhodko and A.J. Ardell: Acta Mater. Vol. 51 (2003), p.5001.

Google Scholar

[14] Q. Xiao, L. Nguyen and W.D. Armstrong: in Electronic Components and Technology, Las Vegas, USA (2004), p.1325.

Google Scholar

[15] S.L. Semiatin, M.W. Corbett, P.N. Fagin, G.A. Salishchev and C.S. Lee: Metall. Trans. A. Vol. 37 (2006), p.1125.

Google Scholar

[16] V.A. Snyder, J. Alkemper and P.W. Voorhees: Acta Mater. Vol. 48 (2000), p.2689.

Google Scholar