Trace Element Effects on Microstructure and Mechanical Properties in Al-Cu-Li Alloy after Thermal Exposure

Abstract:

Article Preview

The effects of trace Ce, Ag on the microstructure and mechanical properties of Al-Cu-Li alloy after thermal exposure have been investigated. It’s found that the addition of Ce may lead to a slight increase in mechanical properties after thermal exposure at 107  . The stability of T1 phase is enhanced by independent Ag addition and the combined additions of Ag and Ce,which results in higher strength compared with Ag-free alloy at 150  thermal exposure. However, at 200  exposure, a great number of q¢ precipitates at the expense of T1 may be responsible for higher tensile strength in the Ag-free alloy than that of the independent addition of Ag and combined additions of Ag and Ce alloys.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

1931-1936

DOI:

10.4028/www.scientific.net/MSF.519-521.1931

Citation:

Z. Q. Zheng et al., "Trace Element Effects on Microstructure and Mechanical Properties in Al-Cu-Li Alloy after Thermal Exposure", Materials Science Forum, Vols. 519-521, pp. 1931-1936, 2006

Online since:

July 2006

Export:

Price:

$35.00

[1] S.M. Kazanjian,N. Wang and E.A. Starke Jr: Mater. Sci. and Eng. Vol. 234-236 (1997), p.571.

[2] B.M. Gable, M.A. Pana, G.J. Shiflet and E.A. Starke Jr: Materials Science Forum Vol. 396-402 (2002), p.69.

[3] D. Ortiz, J. Brown, M. Abdelshehid, et al: Engineering Failure Analysis Vol. 13(2006), p.170.

[4] I.J. Polmear,G. Pons,Y. Barbaux, H. Octor, et al : Mater. Sci. and Tech. Vol. 15(1999), P. 861.

[5] M. Murayama and K. Hono: Scripta Mater Vol. 44(2001), p.701.

[6] D.H. Xiao and J.N. Wang: Journal of alloy and compounds Vol. 352(2003), p.84 A A.

In order to see related information, you need to Login.