Grain refinement of Ca addition in a twin-roll-cast Mg-3Al-1Zn alloy

Jiang, Bin, Liu, Wenjun, Qiu, Dong, Zhang, Ming-Xing and Pan, Fusheng (2012) Grain refinement of Ca addition in a twin-roll-cast Mg-3Al-1Zn alloy. Materials Chemistry and Physics, 133 2-3: 611-616. doi:10.1016/j.matchemphys.2011.12.087

Author Jiang, Bin
Liu, Wenjun
Qiu, Dong
Zhang, Ming-Xing
Pan, Fusheng
Title Grain refinement of Ca addition in a twin-roll-cast Mg-3Al-1Zn alloy
Journal name Materials Chemistry and Physics   Check publisher's open access policy
ISSN 0254-0584
Publication date 2012-04
Sub-type Article (original research)
DOI 10.1016/j.matchemphys.2011.12.087
Volume 133
Issue 2-3
Start page 611
End page 616
Total pages 6
Place of publication Lausanne, Switzerland
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract
Addition of 0.08 wt% Ca into AZ31 melts significantly reduces the average grain size of thin strips produced by twin-roll-cast to 30 μm from 100 μm. Like Zr, due to the high chemical activity, the Ca added into the melts reacts with Al and forms Al2Ca intermetallic compound. X-ray diffraction result approves the existence of Al2Ca in the thin strips, which formed in the melts. Crystallographic examination of relationship between Al2Ca and Mg using the edge-to-edge matching model indicates that Al2Ca particles are effective inoculants for heterogeneous nucleation of Mg. It is considered that Al2Ca is a potential and effective grain refiner for Mg alloys and the grain refinement through addition of Ca in the AZ31 alloy is attributed to the inoculation effect of Al2Ca particles formed in the melts.
Keyword Alloy
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 2013 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 13 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 15 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 21 May 2012, 22:13:49 EST by System User on behalf of Materials