Directional solidification of Al-Cu-Ag alloy

Boyuk U., Marasli N., KAYA H., CADIRLI E., Keslioglu K.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol.95, no.3, pp.923-932, 2009 (SCI-Expanded) identifier identifier


Al-Cu-Ag alloy was prepared in a graphite crucible under a vacuum atmosphere. The samples were directionally solidified upwards under an argon atmosphere with different temperature gradients (G=3.99-8.79 K/mm), at a constant growth rate (V=8.30 mu m/s), and with different growth rates (V=1.83-498.25 mu m/s), at a constant gradient (G=8.79 K/mm) by using the Bridgman type directional solidification apparatus. The microstructure of Al-12.80-at.%-Cu-18.10-at.%-Ag alloy seems to be two fibrous and one lamellar structure.