Titanium as an endogenous grain-refining nucleus

Bermingham, M. J., McDonald, S. D., St John, D. H. and Dargusch, M. S. (2010) Titanium as an endogenous grain-refining nucleus. Philosophical Magazine, 90 6: 699-715. doi:10.1080/14786430903236057

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Author Bermingham, M. J.
McDonald, S. D.
St John, D. H.
Dargusch, M. S.
Title Titanium as an endogenous grain-refining nucleus
Journal name Philosophical Magazine   Check publisher's open access policy
ISSN 1478-6435
Publication date 2010-02-28
Sub-type Article (original research)
DOI 10.1080/14786430903236057
Volume 90
Issue 6
Start page 699
End page 715
Total pages 17
Editor E. A. Davis
K. M. Knowles
A. L. Greer
P. S. Riseborough
Place of publication Abingdon, Oxford, U.K.
Publisher Taylor & Francis
Language eng
Subject 0105 Mathematical Physics
0204 Condensed Matter Physics
0912 Materials Engineering
Formatted abstract
Several studies have confirmed the applicability of the inverse growth restriction theory for predicting grain size in titanium alloy systems. However, until now, no work has identified nuclei particles that could be used to refine the β-grain size of titanium alloys during solidification. This work investigated whether titanium powder can be used to nucleate β-grains during solidification. A novel technique was used to introduce titanium powder to a series of titanium alloys, which results in significant grain refinement with an order of magnitude increase in grain density. Electron back-scattered diffraction (EBSD) was used to prove that titanium substrates can epitaxially nucleate titanium during solidification, and although a number of other potential mechanisms were investigated, it was concluded that the titanium particles heterogeneously nucleate β-grains.
© 2010 Taylor & Francis
Keyword Grain refining
Heterogeneous nucleation
Equiaxed zone
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
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Created: Sun, 28 Feb 2010, 10:01:59 EST