SANS investigations on the solidification of aluminum alloys

N. Iqbal; N. H. Van Dijk; C. D. Dewhurst; L. Katgerman; G. J. Kearley

doi:10.1016/j.physb.2004.03.278

SANS investigations on the solidification of aluminum alloys

N. Iqbal
, N. H. Van Dijk
, C. D. Dewhurst
, L. Katgerman
, G. J. Kearley

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Small-angle neutron scattering (SANS) measurements have been carried out on pure Al and on Al-0.3Ti-0.02B (wt%) alloy during solidification with different cooling rates. The experimental data have been fitted to the Porod law (dΣ/dΩ)(Q) = K_pQ^-4, where the increase in Porod constant K_p during solidification is expected to be proportional to the specific surface S_v of the grain boundaries. For increasing cooling rates the specific surface of the grain boundaries is found to increase for both samples, indicating a decrease in grain size. The presence of TiB₂ grain refiners in the Al-0.3Ti-0.02B alloy further reduces the grain size compared to pure aluminum at a given cooling rate.

Original language	English
Pages (from-to)	E1011-E1014
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	350
Issue number	1-3 SUPPLEMENT
DOIs	https://doi.org/10.1016/j.physb.2004.03.278
Publication status	Published - 15 Jul 2004
Externally published	Yes

Funding

We thank the Institute Laue-Langevin for the beam time. This work has been funded by NIMR and FOM (The Netherlands).

Keywords

Aluminum alloys
Grain size
SANS
Solidification

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2004.03.278

Cite this

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title = "SANS investigations on the solidification of aluminum alloys",

abstract = "Small-angle neutron scattering (SANS) measurements have been carried out on pure Al and on Al-0.3Ti-0.02B (wt\%) alloy during solidification with different cooling rates. The experimental data have been fitted to the Porod law (dΣ/dΩ)(Q) = KpQ-4, where the increase in Porod constant Kp during solidification is expected to be proportional to the specific surface Sv of the grain boundaries. For increasing cooling rates the specific surface of the grain boundaries is found to increase for both samples, indicating a decrease in grain size. The presence of TiB2 grain refiners in the Al-0.3Ti-0.02B alloy further reduces the grain size compared to pure aluminum at a given cooling rate.",

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year = "2004",

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doi = "10.1016/j.physb.2004.03.278",

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TY - JOUR

T1 - SANS investigations on the solidification of aluminum alloys

AU - Iqbal, N.

AU - Van Dijk, N. H.

AU - Dewhurst, C. D.

AU - Katgerman, L.

AU - Kearley, G. J.

PY - 2004/7/15

Y1 - 2004/7/15

N2 - Small-angle neutron scattering (SANS) measurements have been carried out on pure Al and on Al-0.3Ti-0.02B (wt%) alloy during solidification with different cooling rates. The experimental data have been fitted to the Porod law (dΣ/dΩ)(Q) = KpQ-4, where the increase in Porod constant Kp during solidification is expected to be proportional to the specific surface Sv of the grain boundaries. For increasing cooling rates the specific surface of the grain boundaries is found to increase for both samples, indicating a decrease in grain size. The presence of TiB2 grain refiners in the Al-0.3Ti-0.02B alloy further reduces the grain size compared to pure aluminum at a given cooling rate.

AB - Small-angle neutron scattering (SANS) measurements have been carried out on pure Al and on Al-0.3Ti-0.02B (wt%) alloy during solidification with different cooling rates. The experimental data have been fitted to the Porod law (dΣ/dΩ)(Q) = KpQ-4, where the increase in Porod constant Kp during solidification is expected to be proportional to the specific surface Sv of the grain boundaries. For increasing cooling rates the specific surface of the grain boundaries is found to increase for both samples, indicating a decrease in grain size. The presence of TiB2 grain refiners in the Al-0.3Ti-0.02B alloy further reduces the grain size compared to pure aluminum at a given cooling rate.

KW - Aluminum alloys

KW - Grain size

KW - SANS

KW - Solidification

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DO - 10.1016/j.physb.2004.03.278

M3 - Article

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SP - E1011-E1014

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-3 SUPPLEMENT

ER -

SANS investigations on the solidification of aluminum alloys

Abstract

Funding

Keywords

ASJC Scopus subject areas

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