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

Abstract:

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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

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Price:

$35.00

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