Crystallographic study of Al3Zr and Al3Nb as grain refiners for Al alloys

Wang, Feng, Qiu, Dong, Liu, Zhi-lin, Taylor, John, Easton, Mark and Zhang, Ming-xing (2014) Crystallographic study of Al3Zr and Al3Nb as grain refiners for Al alloys. Transactions of Nonferrous Metals Society of China, 24 7: 2034-2040. doi:10.1016/S1003-6326(14)63309-4


Author Wang, Feng
Qiu, Dong
Liu, Zhi-lin
Taylor, John
Easton, Mark
Zhang, Ming-xing
Title Crystallographic study of Al3Zr and Al3Nb as grain refiners for Al alloys
Formatted title
Crystallographic study of Al3Zr and Al3Nb as grain refiners for Al alloys
Journal name Transactions of Nonferrous Metals Society of China   Check publisher's open access policy
ISSN 1003-6326
2210-3384
Publication date 2014-07
Year available 2014
Sub-type Article (original research)
DOI 10.1016/S1003-6326(14)63309-4
Open Access Status
Volume 24
Issue 7
Start page 2034
End page 2040
Total pages 7
Place of publication Changsha, China
Publisher Nonferrous Metals Society of China
Collection year 2015
Language eng
Formatted abstract
The potency of Al3Zr and Al3Nb as grain refiners for Al alloys was investigated from a crystallographic point of view using the edge-to-edge matching (E2EM) model. The results show that both Al3Zr and Al3Nb have small values of interatomic spacing misfit and interplanar spacing mismatch with respect to Al. Furthermore, energetically favourable orientation relationships predicted by the model exist between Al and each of these two intermetallic phases. In the light of the edge-to-edge matching model predictions, it is suggested that both Al3Zr and Al3Nb are potent heterogeneous nucleation refiners for Al grains from the crystallographic point of view. The present crystallographic analysis provides a more reasonable explanation for the significant grain refinement obtained in the peritectic Al-Zr and Al-Nb alloys and also provides fresh insight into the understanding of the grain refinement mechanism of Al alloys.
Keyword Al alloy
A3Zr
Al3Nb
Grain refinement
Peritectic
Crystallography
E2EM model
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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