Effect of long-period stacking ordered phase on thermal stability of refined grains in Mg-RE-based alloys

Li, Y. X., Qiu, D., Rong, Y. H. and Zhang, M. X. (2014) Effect of long-period stacking ordered phase on thermal stability of refined grains in Mg-RE-based alloys. Philosophical Magazine, 94 12: 1311-1326. doi:10.1080/14786435.2014.885141


Author Li, Y. X.
Qiu, D.
Rong, Y. H.
Zhang, M. X.
Title Effect of long-period stacking ordered phase on thermal stability of refined grains in Mg-RE-based alloys
Journal name Philosophical Magazine   Check publisher's open access policy
ISSN 1478-6435
1478-6443
Publication date 2014-04-23
Year available 2014
Sub-type Article (original research)
DOI 10.1080/14786435.2014.885141
Open Access Status
Volume 94
Issue 12
Start page 1311
End page 1326
Total pages 16
Place of publication Abingdon, Oxfordshire, United Kingdom
Publisher Taylor and Francis
Collection year 2015
Language eng
Abstract The refined grains in both as-cast Mg-10Y-1Zn-2Zr (WZ101 K, wt.%) and Mg-10Y-1Al (WA101, wt.%) alloys have been found to have superior thermal stability after solution treatment. Plate-shaped, but different polytypes of long-period stacking ordered (LPSO) phases distributed along grain boundaries are considered as the predominant inhibitors of grain growth. Based on the plate-shaped features of the LPSO phases, a modified Zeners model is established and the predicted limiting grain sizes are in a good agreement with the experimental results. Therefore, this model has strong potential for designing advanced Mg-RE-based alloys with high strength and high creep resistance at high temperatures.
Keyword Grain size
LPSO phase
Magnesium alloys
Modified Zener's model
Thermal stability
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
 
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