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Effects of La and Ce Addition on the Modification of Al-Si Based Alloys
Joint Authors
Samuel, F. H.
Elgallad, Emad M.
Doty, Herbert W.
Alkahtani, Saleh A.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-25
Country of Publication
Egypt
No. of Pages
13
Abstract EN
This study focuses on the effects of the addition of rare earth metals (mainly lanthanum and cerium) on the eutectic Si characteristics in Al-Si based alloys.
Based on the solidification curves and microstructural examination of the corresponding alloys, it was found that addition of La or Ce increases the alloy melting temperature and the Al-Si eutectic temperature, with an Al-Si recalescence of 2-3°C, and the appearance of post-α-Al peaks attributed to precipitation of rare earth intermetallics.
Addition of La or Ce to Al-(7–13)% Si causes only partial modification of the eutectic Si particles.
Lanthanum has a high affinity to react with Sr, which weakens the modification efficiency of the latter.
Cerium, however, has a high affinity for Ti, forming a large amount of sludge.
Due to the large difference in the length of the eutectic Si particles in the same sample, the normal use of standard deviation in this case is meaningless.
American Psychological Association (APA)
Elgallad, Emad M.& Doty, Herbert W.& Alkahtani, Saleh A.& Samuel, F. H.. 2016. Effects of La and Ce Addition on the Modification of Al-Si Based Alloys. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1096183
Modern Language Association (MLA)
Elgallad, Emad M.…[et al.]. Effects of La and Ce Addition on the Modification of Al-Si Based Alloys. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-13.
https://search.emarefa.net/detail/BIM-1096183
American Medical Association (AMA)
Elgallad, Emad M.& Doty, Herbert W.& Alkahtani, Saleh A.& Samuel, F. H.. Effects of La and Ce Addition on the Modification of Al-Si Based Alloys. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1096183
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096183