A reassessment of the grain refinement mechanisms of magnesium alloys

StJohn, D. H., Cao, Peng, Qian, Ma and Easton, Mark A. (2006). A reassessment of the grain refinement mechanisms of magnesium alloys. In: K. U. Kainer, Magnesium: Proceedings of the 7th International Conference Magnesium Alloys and Their Applications. Magnesium 2006: 7th International Conference on Magnesium Alloys and Their Applications, Dresden, Germany, (189-199). 6-9 November 2006.


Author StJohn, D. H.
Cao, Peng
Qian, Ma
Easton, Mark A.
Title of paper A reassessment of the grain refinement mechanisms of magnesium alloys
Conference name Magnesium 2006: 7th International Conference on Magnesium Alloys and Their Applications
Conference location Dresden, Germany
Conference dates 6-9 November 2006
Proceedings title Magnesium: Proceedings of the 7th International Conference Magnesium Alloys and Their Applications
Place of Publication Weinheim, Germany
Publisher Karger
Publication Year 2006
Sub-type Fully published paper
ISBN 9783527317646
3527317643
Editor K. U. Kainer
Start page 189
End page 199
Total pages 11
Language eng
Formatted Abstract/Summary Grain refinement of magnesium alloys has been a challenging topic for decades. Although zirconium is an excellent grain refiner for alloys that do not contain aluminium, it is expensive and work has focused on reducing the amount of zirconium required for good refinement. On the other hand, for those magnesium alloys that contain aluminium it has been much more difficult to develop a commercially viable and reliable grain refiner.

This paper will present the latest developments in the theory of grain refinement and then use this knowledge to revisit some of the mechanisms proposed in the literature to explain phenomena such as superheating and native refinement, and the effect of iron and manganese on grain refinement. With this new knowledge the potential for the discovery of new or improved refiners is explored.
Subjects 09 Engineering
Q-Index Code EX
Additional Notes Presented during the Tuesday 7th Plenary Session. Published as "A New Analytical Methodology for the Assessment of Grain Refinement in Magnesium Alloys".

 
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Created: Fri, 27 Nov 2009, 14:54:48 EST by Ms Lynette Adams on behalf of School of Engineering