Paper Title:
Effect of Solidification Rate and Composition on Segregation in Al-Li-Cu-Zr Alloys
  Abstract

In the present study, solidification and segregation of Al-Li-Cu-Zr alloys have been investigated. Results show that shape of ingots and amount of lithium can change solidification essence. Increasing solidification rate, not only eliminates grain-refining effect of zirconium but also causes coarse segregation of copper in grain boundaries (negative segregation). Increasing amount of lithium in Al-Cu-Li-Zr alloys can change the solubility of other alloying elements (Cu, Zr) and increase solidification range and microsegregation of copper in structure.

  Info
Periodical
Defect and Diffusion Forum (Volumes 258-260)
Edited by
Andreas Öchsner and José Grácio
Pages
15-19
DOI
10.4028/www.scientific.net/DDF.258-260.15
Citation
S. Ahmadi, A. Shokuhfar, S.M.M. Hadavi, A. Rezaei, H. Azimi, "Effect of Solidification Rate and Composition on Segregation in Al-Li-Cu-Zr Alloys", Defect and Diffusion Forum, Vols. 258-260, pp. 15-19, 2006
Online since
October 2006
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Price
$32.00
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