The effect of addition of cerium on the grain refinement of Mg-3Al-1Zn cast alloy

Jiang, Bin, Zeng, Ying, Zhang, Mingxing, Liao, Jichao and Pan, Fusheng (2013) The effect of addition of cerium on the grain refinement of Mg-3Al-1Zn cast alloy. Journal of Materials Research, 28 19: 2694-2700. doi:10.1557/jmr.2013.237

Author Jiang, Bin
Zeng, Ying
Zhang, Mingxing
Liao, Jichao
Pan, Fusheng
Title The effect of addition of cerium on the grain refinement of Mg-3Al-1Zn cast alloy
Journal name Journal of Materials Research   Check publisher's open access policy
ISSN 0884-2914
Publication date 2013-10
Year available 2013
Sub-type Article (original research)
DOI 10.1557/jmr.2013.237
Volume 28
Issue 19
Start page 2694
End page 2700
Total pages 7
Place of publication New York, NY United States
Publisher Cambridge University Press
Collection year 2014
Language eng
Formatted abstract
The microstructures of the cast Mg–3Al–1Zn–xCe (x = 0, 0.2, 0.4, 0.8, and 1.2 wt%) alloys produced by twin-roll casting were observed to reveal the effect of cerium (Ce) on the Mg–3Al–1Zn (AZ31) alloy. Transmission electron microscopy (TEM) image of Al4Ce particles at the centers of grains was observed, and the crystallographic calculations between Al4Ce and α-Mg were examined on the basis of the edge-to-edge matching model. The results indicated that the addition of Ce effectively reduces the grain size of the cast AZ31 alloy produced by twin-roll casting. The finest grains with an average grain size of 55 μm are achieved at 0.4 wt% addition of Ce. TEM observation and good crystallographic matching between Al4Ce and α-Mg suggest that promotion of heterogeneous nucleation of α-Mg on Al4Ce particles formed in the melt is responsible for the grain refinement when adding Ce to the cast AZ31 alloy.
Keyword Crystallographic Structure
Grain size
Transmission electron microscopy (TEM)
Mechanical properties
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 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 10 Nov 2013, 00:35:30 EST by System User on behalf of School of Mechanical and Mining Engineering