Current research progress in grain refinement of cast magnesium alloys: A review article

Ali, Yahia, Qiu, Dong, Jiang, Bin, Pan, Fusheng and Zhang, Ming-Xing (2015) Current research progress in grain refinement of cast magnesium alloys: A review article. Journal of Alloys and Compounds, 619 639-651. doi:10.1016/j.jallcom.2014.09.061


Author Ali, Yahia
Qiu, Dong
Jiang, Bin
Pan, Fusheng
Zhang, Ming-Xing
Title Current research progress in grain refinement of cast magnesium alloys: A review article
Journal name Journal of Alloys and Compounds   Check publisher's open access policy
ISSN 0925-8388
1873-4669
Publication date 2015-01-15
Year available 2014
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.jallcom.2014.09.061
Open Access Status DOI
Volume 619
Start page 639
End page 651
Total pages 13
Place of publication Amsterdam, The Netherlands
Publisher Elsevier Ltd
Language eng
Subject 2211 Mechanics of Materials
2210 Mechanical Engineering
2506 Metals and Alloys
2505 Materials Chemistry
Abstract Grain refinement of cast magnesium alloys, particularly in magnesium-aluminium (Mg-Al) based alloys, has been an active research topic in the past two decades, because it has been considered as one of the most effective approaches to simultaneously increase the strength, ductility and formability. The development of new grain refiners was normally based on the theories/models that were established through comprehensive and considerable studies of grain refinement in cast Al alloys. Generally, grain refinement in cast Al can be achieved through either inoculation treatment, which is a process of adding, or in situ forming, foreign particles to promote heterogeneous nucleation rate, or restricting grain growth by controlling the constitutional supercooling or both. But, the concrete and tangible grain refinement mechanism in cast metals is still not fully understood and there are a number of controversies. Therefore, most of the new developed grain refiners for Mg-Al based alloys are not as efficient as the commercially available ones, such as zirconium in non-Al containing Mg alloys. To facilitate the research in grain refinement of cast magnesium alloys, this review starts with highlighting the theoretical aspects of grain refinement in cast metals, followed by reviewing the latest research progress in grain refinement of magnesium alloys in terms of the solute effect and potent nucleants.
Keyword Casting
Grain refinement
Light metals
Magnesium
Metals
Solidification
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 16 September 2014.

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
 
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