The influence of CaO addition on grain refinement of cast magnesium alloys

Ali, Yahia, Qiu, Dong, Jiang, Bin, Pan, Fusheng and Zhang, Ming-Xing (2016) The influence of CaO addition on grain refinement of cast magnesium alloys. Scripta Materialia, 114 103-107. doi:10.1016/j.scriptamat.2015.12.015


Author Ali, Yahia
Qiu, Dong
Jiang, Bin
Pan, Fusheng
Zhang, Ming-Xing
Title The influence of CaO addition on grain refinement of cast magnesium alloys
Journal name Scripta Materialia   Check publisher's open access policy
ISSN 1359-6462
1872-8456
Publication date 2016-03-15
Sub-type Article (original research)
DOI 10.1016/j.scriptamat.2015.12.015
Open Access Status Not Open Access
Volume 114
Start page 103
End page 107
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract CaO was validated as an effective grain refiner for cast Mg alloys. 0.7 wt.% CaO addition led to significant reduction in grain size. As CaO particles were reproducibly found within the Mg grains, it was considered that CaO particles promoted heterogeneous nucleation. Additionally, some CaO particles were chemically reduced by Mg, which produced Ca solute and contributed to the grain refinement. The present work indicates that co-existence of active nucleants and solutes with high Q-values in the melt is essential to achieve the highest grain refining efficiency. For Mg alloys, chemical reactions should also be considered at inoculation treatment.
Keyword CaO
Casting
Grain refinement
Magnesium alloys
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
HERDC Pre-Audit
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 02 Feb 2016, 10:17:01 EST by System User on behalf of Learning and Research Services (UQ Library)