Paper Titles
Quantitative Correlation between Strength, Ductility and Precipitate Microstructures with PFZ in Al-Zn-Mg(-Ag, Cu) Alloys
p.431
3DAP Analysis and Computer Simulation of Nanocluster Formation in the Initial Aging Stage of Al-Zn Alloys
p.437
Modelling Dispersoid Precipitation during Recrystallisation in AA3103
p.443
The Effect of Grain Refiners for Aluminium Alloy Containing Mn-Ti-Sr Dispersoid
p.449
Understanding the Compromise between Strength and Exfoliation Corrosion in High Strength 7000 Alloys
p.455
The Effect of Alloy Addition on the High Temperature Properties of Over-Aged Al-Si(CuNiMg) Cast Alloys
p.461
Grain Boundary Segregation and Precipitation in Aluminium Alloy AA6061
p.467
Coherency Loss of Al3Sc Precipitates during Ageing of Dilute Al-Sc Alloys
p.473
Influence of Cd and In on the Formation Kinetics of the δ' Metastable Phase in Al-Li-In(Cd) Alloys
p.479

Understanding the Compromise between Strength and Exfoliation Corrosion in High Strength 7000 Alloys

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Abstract:

The microstructural evolution has been investigated in three alloys of the 7000 series possessing increasing zinc contents by combining small-angle X-ray scattering, differential scanning calorimetry and transmission electron microscopy, in order to gain understanding on the evolution of the compromise between yield strength and corrosion resistance. We show that the three materials show qualitatively identical precipitation sequences; however the precipitated volume fraction is shown to increase in parallel to the Zn content. Moreover, the precipitate size evolution is faster in the high Zn alloy. The precipitate composition is inferred to vary in the three materials, and this difference is shown to explain the differences in calorimetric behavior, precipitation kinetics and corrosion resistance.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

455-460

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.455

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Online since:

July 2006

Authors:

T. Marlaud, B. Baroux, Alexis Deschamps, J.L. Chemin, C. Hénon

Keywords:

AA7000, Dye Sensitized Solar Cell (DSSC), Exfoliation Corrosion, Precipitation Hardening, SAXS, TEM

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] J.D. Hatch: Metals park, ASM Intl (1984).

Google Scholar

[2] R. Develay: Techniques de l'ingénieur, M 1290 (1986).

Google Scholar

[3] ASTM G 34-79: Metal Test Methods And Analytical Procedures, Vol 03 02 (1974).

Google Scholar

[4] F. Livet, D. Bloch: Scripta Metall, Vol. 1147 (1985).

Google Scholar

[5] E.S. Tankins and W.E. Frazier: NACE, Vol. 19 (1961).

Google Scholar

[6] E.H. Hollingsworth and H.Y. Hunsicker: Corrosion Handbook, 9th edition (1987).

Google Scholar

[7] J. K Park and A.J. Ardell: Acta Metall Mater, Vol. 39 (1991).

Google Scholar

[8] T. Ramgopal, P. Schmutz, and G.S. Frankel: J. Elect. Soc., Vol. 148 (2001).

Google Scholar

[9] R.J. Livak and J.M. Papazian: Scripta Met, June (1987).

Google Scholar

[10] I.M. Lifshitz, and V.V. Slyozov: J. Phys. Chem. Solids, Vol. 19 (1961).

Google Scholar

[11] H. Meher : Springer-Verlag, Vol 26 (1990).

Google Scholar