Paper Title:
The Effect of Alloying Additions on Vacancy Behaviour in Aluminium-Copper Alloys
  Abstract

The effect of Si additions on vacancy behavior following solution treatment and quenching was studied for an Al-Cu-Mg-Ag alloy system using positron annihilation lifetime spectroscopy (PALS). Both the initial positron lifetime and steady state positron lifetime increase as the Si concentration increases. This behavior is interpreted in terms of Si interacting with vacancies, leading to their retention in the alloy. The ability of PALS to monitor vacancy behavior after solution treatment should allow the improved prediction of phase transformation kinetics and hence the tailoring of ageing treatments.

  Info
Periodical
Materials Science Forum (Volumes 519-521)
Edited by
W.J. Poole, M.A. Wells and D.J. Lloyd
Pages
597-602
DOI
10.4028/www.scientific.net/MSF.519-521.597
Citation
T. Kratzer, B. M. Gable, K. M. Nairn, T. J. Bastow, B. C. Muddle, A. J. Hill, "The Effect of Alloying Additions on Vacancy Behaviour in Aluminium-Copper Alloys", Materials Science Forum, Vols. 519-521, pp. 597-602, Jul. 2006
Online since
July 2006
Price
US$ 28,-
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