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Effect of Melt Temperature on the Effectiveness of the Grain Refining in Al-Si Castings
Joint Authors
Samuel, F. H.
Doty, Herbert W.
Samuel, A. M.
Valtierra, S.
Mohamed, S. S.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-05-30
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The results inferred from the present work show that Al3Ti phase has a strong affinity to react with silicon (Si) in the molten alloy leading to formation of (Al,Si)3Ti phase instead.
This reaction is independent of the grain refiner type.
The molten liquid temperature would change its morphology from platelets at 750°C into dendritic structure at 950°C.
It has also been observed that (Al,Si)3Ti phase platelets precipitate within the α-aluminum dendrites, whereas TiB2 or AlB2 particles are released into the surrounding interdendritic regions.
Introduction of the grain refiner, regardless its type, would cause change in the α-aluminum dendrite morphology from an elongated to a more rounded form.
The results also reveal that addition of 100 ppm B will reduce the initial grain size by ∼85% which is more than the effect of addition of 0.2%Ti in the form of Al-10%Ti (about 65%).
Elimination of undercooling is important to obtain the maximum grain refining effect.
American Psychological Association (APA)
Samuel, A. M.& Mohamed, S. S.& Doty, Herbert W.& Valtierra, S.& Samuel, F. H.. 2018. Effect of Melt Temperature on the Effectiveness of the Grain Refining in Al-Si Castings. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121730
Modern Language Association (MLA)
Samuel, A. M.…[et al.]. Effect of Melt Temperature on the Effectiveness of the Grain Refining in Al-Si Castings. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1121730
American Medical Association (AMA)
Samuel, A. M.& Mohamed, S. S.& Doty, Herbert W.& Valtierra, S.& Samuel, F. H.. Effect of Melt Temperature on the Effectiveness of the Grain Refining in Al-Si Castings. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121730
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121730