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Title: Nucleation kinetics during the solidification of aluminum alloys.
Authors: Iqbal, N
van Dijk, NH
Offerman, SE
Moret, MP
Katgerman, L
Kearley, GJ
Keywords: Amorphous state
Metallic glasses
Liquid metals
X-ray diffraction
Issue Date: 15-Oct-2007
Publisher: Elsevier
Citation: Iqbal, N., van Dijk, N. H., Offerman, S. E., Moret, M. P., Katgerman, L., & Kearley, G. J. (2007). Nucleation kinetics during the solidification of aluminum alloys. Journal of Non-Crystalline Solids, 353(32-40), 3640-3643. doi:10.1016/j.jnoncrysol.2007.05.126
Abstract: The nucleation kinetics of individual grains during solidification of an aluminium alloy are experimentally investigated by X-ray diffraction at a synchrotron source. The investigated aluminium alloy contained solute titanium along with micrometer size TiB2 particles, which act as substrates for heterogeneous nucleation of aluminium grains during solidification. The nucleation rate of aluminium grains during solidification is measured by different cooling rates ranging from 1 to 40 K/min. The measurements indicate that for the continuous cooling, the nucleation rate strongly decreases with time. The nucleation process is complete for solid fractions below 30% for all cooling rates. The maximum nucleation rate significantly increases with increasing cooling rates. © 2007, Elsevier Ltd.
Gov't Doc #: 1176
ISSN: 0022-3093
Appears in Collections:Journal Articles

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