Grain refinement and hot tearing of aluminium alloys - How to optimise and minimise

Easton, Mark, StJohn, David and Sweet, Lisa (2010). Grain refinement and hot tearing of aluminium alloys - How to optimise and minimise. In: J. A. Taylor, J. F. Grandfield and A. Prasad, Aluminium cast house technology XI: Selected, peer reviewed papers from the International conference, organised by the CAST CRC on behalf of the aluminium industry. 11th International Conference on Aluminium Cast House Technology, Surfers Paradise, QLD, (213-221). 13-16 September 2009. doi:10.4028/www.scientific.net/MSF.630.213


Author Easton, Mark
StJohn, David
Sweet, Lisa
Title of paper Grain refinement and hot tearing of aluminium alloys - How to optimise and minimise
Conference name 11th International Conference on Aluminium Cast House Technology
Conference location Surfers Paradise, QLD
Conference dates 13-16 September 2009
Proceedings title Aluminium cast house technology XI: Selected, peer reviewed papers from the International conference, organised by the CAST CRC on behalf of the aluminium industry   Check publisher's open access policy
Journal name Materials Science Forum   Check publisher's open access policy
Place of Publication Stafa-Zurich ; United Kingdom
Publisher Trans Tech Publications
Publication Year 2010
Year available 2010
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/MSF.630.213
ISBN 0878493166
ISSN 0255-5476
Editor J. A. Taylor
J. F. Grandfield
A. Prasad
Volume 630
Start page 213
End page 221
Total pages 9
Collection year 2011
Language eng
Formatted Abstract/Summary
Grain refinement and hot tearing are important key factors affecting the quality of castings. There have been substantial advances in the understanding of both of these phenomena over the last two decades. The paper discusses strategies for obtaining the lowest cost grain refiner addition and provides an explanation for how the refinement of equiaxed grains leads to a reduction in hot tear susceptibility. However, it also provides a warning that adding more grain refiner may not be better for reducing hot tear susceptibility. Alloy factors affecting hot tearing are also discussed. Finally, a list of six key considerations is provided to help casthouse and foundry engineers when trying to optimise grain refinement and reduce hot tearing.
Subjects 2210 Mechanical Engineering
2211 Mechanics of Materials
2500 Materials Science
3104 Condensed Matter Physics
Keyword 6000 series alloys
Casting
Grain refinement
Hot tearing
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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