Precipitation Sequences in Two Al-Li-Cu Alloys

Benjamin Decreus; Frédéric de Geuser; Alexis Deschamps; Patricia Donnadieu; Christophe Sigli

doi:10.4028/www.scientific.net/SSP.172-174.267

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HomeSolid State PhenomenaSolid State Phenomena Vols. 172-174Precipitation Sequences in Two Al-Li-Cu Alloys

Precipitation Sequences in Two Al-Li-Cu Alloys

Abstract:

The precipitation sequences in two Al-Li-Cu alloys with similar Cu concentration and different Li concentration have been studied by small-angle X-ray scattering using synchrotron light, in combination with transmission electron microscopy. The sequence ranges from phases formed during natural ageing to the hardening ones obtained by artificial ageing at 155°C. It is found that the low Li-containing alloy shows first Cu-rich clusters at room temperature followed by T₁ precipitates, while the high Li-containing alloy shows first δ’-Al₃Li precipitates and then formation of T1 phase in coexistence with the δ’. The influence of alloy composition on T₁ nucleation and growth kinetics is discussed in light of the experimental results.

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Periodical:

Solid State Phenomena (Volumes 172-174)

Pages:

267-272

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.267

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Online since:

June 2011

Authors:

Benjamin Decreus, Frédéric de Geuser, Alexis Deschamps, Patricia Donnadieu, Christophe Sigli

Keywords:

Al-Li-Cu Alloys, Precipitation, Small Angle X-Ray Scattering, T1 Phase

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References

[1] T. Warner : Mater. Sci. Forum Vol. 519-521 (2006), p.1271.

Google Scholar

[2] B.M. Gable, A. W. Zhu, et al. : J. of Light Metals Vol. 1(14) (2001), p.1.

Google Scholar

[3] J.M. Silcock : J. Inst. Metals, Vol. 89 (1961), p.203.

Google Scholar

[4] O. Glatter, and O. Krattky : Small-Angle X-ray Scattering, Academic Press (1982).

Google Scholar

[5] P. Fratzl, F. Langmayr, et al. J. of Appl. Crystallograohy, Vol. 26 (1993), p.820.

Google Scholar

[6] W. Lefebvre, K. Hoummada, B. Decreus, F. de Geuser, and A. Deschamps: in Proceedings of the 10th ICAA Conference Aachen, Germany, Eds. Hirsch J, Skrotzki B, Gottstein G, Wiley-VCH, Weinheim, Germany (2008), p.801.

Google Scholar