Influence of Al and Y on the ignition and flammability of Mg alloys

Prasad, Arvind, Shi, Zhiming and Atrens, Andrej (2012) Influence of Al and Y on the ignition and flammability of Mg alloys. Corrosion Science, 55 153-163. doi:10.1016/j.corsci.2011.10.014

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Author Prasad, Arvind
Shi, Zhiming
Atrens, Andrej
Title Influence of Al and Y on the ignition and flammability of Mg alloys
Journal name Corrosion Science   Check publisher's open access policy
ISSN 0010-938X
Publication date 2012-02
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.corsci.2011.10.014
Open Access Status File (Author Post-print)
Volume 55
Start page 153
End page 163
Total pages 11
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Collection year 2013
Language eng
Formatted abstract
The influence of alloying on the ignition and flammability was studied. One end of a cylindrical specimen was exposed to a free diffusion flame. Ignition required at least partial melting. Burning extinguished once the flame was withdrawn. Specimen tips of pure Mg, AZ61, and AZ91 ignited upon prolonged flame exposure. There was smouldering and delayed ignition for Mg-1Y. There was no ignition for Mg-5Y specimen tips, attributed to a protective surface oxide containing Y. The results indicate that (i) vigorous burning requires a continued supply of Mg vapour, and (ii) a critical alloy concentration is required to change ignition behaviour.

Highlights: ► Ignition occurred only after melting for high purity (HP) Mg, AZ61 and AZ91. ► Burning of specimen tips extinguishing for HP Mg, AZ61 and AZ91. ► Small molten blobs of HP Mg, AZ61 and AZ91 continued to burn. ► There was no ignition for Mg-5Y specimens. ► The higher ignition resistance of Mg-5Y is attributed to a more protective oxide.
Keyword A. magnesium
C. oxidation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 20 October 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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Created: Tue, 03 Jan 2012, 12:08:09 EST by Dr Arvind Prasad on behalf of Materials