Paper Title:
Particle-Stimulated Nucleation of Recrystallization for Grain-Size Control in 01420 Al-Li Alloy
  Abstract

Grain refinement of 01420 Al-Li alloy through particle stimulated nucleation(PSN) of recrystallization is reported. The results showed that the rolling in the overaged 01420 Al-Li alloy resulted in the formation of the deformation zones associated with the second phase particles larger than 0.80 μm which can act as the nucleation sites for recrystallized grains. The precipitates larger than 0.80 μm are sticked shaped S-phase(Al2MgLi) and globular β-phase(Mg2Al3), and the density of β-phase particles is approximately as two to three times as the S-phase particles. The S-phase particles can’t be as PSN sites since they were broken to small dispersoid particles during rolling. The average grain size of 01420 Al-Li alloy solutioned at 470°C for 2h, aged at 300 °C for 48h, 81% rolled at 300 °C and finally recrystallized at 500 °C for 10min is approximately 10 μm.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
889-892
DOI
10.4028/www.scientific.net/MSF.546-549.889
Citation
L. Y. Ye, X. M. Zhang, Y. X. Du, Z. H. Luo, "Particle-Stimulated Nucleation of Recrystallization for Grain-Size Control in 01420 Al-Li Alloy", Materials Science Forum, Vols. 546-549, pp. 889-892, 2007
Online since
May 2007
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Price
$32.00
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