Real-time observation of grain nucleation and growth during solidification of aluminium alloys

N. Iqbal; N. H. Van Dijk; S. E. Offerman; M. P. Moret; L. Katgerman; G. J. Kearley

doi:10.1016/j.actamat.2005.02.045

Real-time observation of grain nucleation and growth during solidification of aluminium alloys

N. Iqbal, N. H. Van Dijk, S. E. Offerman, M. P. Moret, L. Katgerman, G. J. Kearley

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

118 Citations (Scopus)

Abstract

The crystallisation kinetics of liquid aluminium-titanium alloys with microscopic TiB₂ particles added to refine the grain size in the solidified material was studied by X-ray diffraction measurements at a synchrotron source. Real-time observation of the formation and growth of individual grains reveals the central role played by the added TiB₂ particles during solidification. Prior to the main transformation, weak reflections of a metastable TiAl₃ phase were detected. This observation finally pinpoints the highly debated mechanism responsible for enhanced grain nucleation in Al-Ti-B alloys.

Original language	English
Pages (from-to)	2875-2880
Number of pages	6
Journal	Acta Materialia
Volume	53
Issue number	10
Early online date	20 Apr 2005
DOIs	https://doi.org/10.1016/j.actamat.2005.02.045
Publication status	Published - 1 Jun 2005
Externally published	Yes

Funding

We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities and we would like to thank G. Vaughan and A. Götz for assistance in using beamline ID11. We thank Y. Huang for assistance with the sample preparation. This work was financially supported in part by the Foundation for Fundamental Research on Matter (FOM) of the Netherlands Organisation for Scientific Research (NWO) and the Netherlands Institute for Metals Research (NIMR).

Keywords

Aluminium alloys
Grain refinement
Solidification
TiB
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2005.02.045

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title = "Real-time observation of grain nucleation and growth during solidification of aluminium alloys",

abstract = "The crystallisation kinetics of liquid aluminium-titanium alloys with microscopic TiB2 particles added to refine the grain size in the solidified material was studied by X-ray diffraction measurements at a synchrotron source. Real-time observation of the formation and growth of individual grains reveals the central role played by the added TiB2 particles during solidification. Prior to the main transformation, weak reflections of a metastable TiAl3 phase were detected. This observation finally pinpoints the highly debated mechanism responsible for enhanced grain nucleation in Al-Ti-B alloys.",

keywords = "Aluminium alloys, Grain refinement, Solidification, TiB, X-ray diffraction",

author = "N. Iqbal and \{Van Dijk\}, \{N. H.\} and Offerman, \{S. E.\} and Moret, \{M. P.\} and L. Katgerman and Kearley, \{G. J.\}",

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doi = "10.1016/j.actamat.2005.02.045",

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T1 - Real-time observation of grain nucleation and growth during solidification of aluminium alloys

AU - Iqbal, N.

AU - Van Dijk, N. H.

AU - Offerman, S. E.

AU - Moret, M. P.

AU - Katgerman, L.

AU - Kearley, G. J.

PY - 2005/6/1

Y1 - 2005/6/1

N2 - The crystallisation kinetics of liquid aluminium-titanium alloys with microscopic TiB2 particles added to refine the grain size in the solidified material was studied by X-ray diffraction measurements at a synchrotron source. Real-time observation of the formation and growth of individual grains reveals the central role played by the added TiB2 particles during solidification. Prior to the main transformation, weak reflections of a metastable TiAl3 phase were detected. This observation finally pinpoints the highly debated mechanism responsible for enhanced grain nucleation in Al-Ti-B alloys.

AB - The crystallisation kinetics of liquid aluminium-titanium alloys with microscopic TiB2 particles added to refine the grain size in the solidified material was studied by X-ray diffraction measurements at a synchrotron source. Real-time observation of the formation and growth of individual grains reveals the central role played by the added TiB2 particles during solidification. Prior to the main transformation, weak reflections of a metastable TiAl3 phase were detected. This observation finally pinpoints the highly debated mechanism responsible for enhanced grain nucleation in Al-Ti-B alloys.

KW - Aluminium alloys

KW - Grain refinement

KW - Solidification

KW - TiB

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/29444452197

U2 - 10.1016/j.actamat.2005.02.045

DO - 10.1016/j.actamat.2005.02.045

M3 - Article

AN - SCOPUS:29444452197

SN - 1359-6454

VL - 53

SP - 2875

EP - 2880

JO - Acta Materialia

JF - Acta Materialia

IS - 10

ER -

Real-time observation of grain nucleation and growth during solidification of aluminium alloys

Abstract

Funding

Keywords

ASJC Scopus subject areas

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