Improved prediction of the grain size of aluminum alloys that includes the effect of cooling rate

Easton, M. A. and St John, D. H. (2008) Improved prediction of the grain size of aluminum alloys that includes the effect of cooling rate. Materials Science and Engineering: A, 486 1-2: 8-13. doi:10.1016/j.msea.2007.11.009


Author Easton, M. A.
St John, D. H.
Title Improved prediction of the grain size of aluminum alloys that includes the effect of cooling rate
Journal name Materials Science and Engineering: A   Check publisher's open access policy
ISSN 0921-5093
Publication date 2008-06-15
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.msea.2007.11.009
Open Access Status Not yet assessed
Volume 486
Issue 1-2
Start page 8
End page 13
Total pages 6
Editor G. Kostorz
M. Kato
Place of publication Lausanne, Switzerland
Publisher Elsevier S.A.
Language eng
Subject 291403 Alloy Materials
C1
8612 Fabricated Metal Products
091207 Metals and Alloy Materials
Abstract A comprehensive study of the effect of cooling rate on the grain size of a range of grain refined wrought aluminum alloys was carried out under quiescent solidification conditions where nucleation occurs predominantly by a constitutional undercooling mechanism. Increasing the cooling rate reduced the grain size by increasing the number of particles that nucleate grains and by affecting the development of constitutional undercooling. Both effects are represented using simple analytical relationships. By coupling these results with earlier work, an empirical relationship is developed between grain size, density of nucleant particles, cooling rate, nucleant potency and alloy composition that allows prediction of grain size across a wide range of alloys and cooling rates.
Keyword Grain refinement
Cooling rate
Aluminum alloys
Solidification
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: 2009 Higher Education Research Data Collection
 
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Created: Wed, 01 Apr 2009, 22:24:22 EST by Sally Beard on behalf of Materials