Al-Ti-C-Sr master alloy-A melt inoculant for simultaneous grain refinement and modification of hypoeutectic Al-Si alloys
- Title
- Al-Ti-C-Sr master alloy-A melt inoculant for simultaneous grain refinement and modification of hypoeutectic Al-Si alloys
- Authors
- RAO, AKP; DAS, K; MURTY, BS; CHAKRABORTY, M; null
- Date Issued
- 2009-07
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- Present article is focused on the microstructural features of Al-Ti-C-Sr master alloy, an inoculant for simultaneous grain refinement and modification of hypoeutectic Al-Si alloys. This master alloy is basically a metal matrix composite consisting of TiC and Al(4)Sr phases formed in situ in the Al-matrix. TiC particles initiate the refinement of primary alpha-Al through heterogeneous nucleation in molten hypoeutectic Al-Si alloy, while Al(4)Sr phase dissolves in molten Al-7Si alloy enriching the melt with Sr, which eventually leads to modification of eutectic silicon during solidification of the Al-7Si alloy casting. Thus present master alloy serves in both ways, as a grain refiner and a modifier for hypoeutectic Al-Si alloys. (C) 2009 Elsevier B.V. All rights reserved.
- Keywords
- Metals and alloys; Intermetallics; Scanning electron microscopy (SEM); Microstructure; Metal matrix composites; AL-7SI ALLOY; ALUMINUM
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28311
- DOI
- 10.1016/J.JALLCOM.20
- ISSN
- 0925-8388
- Article Type
- Article
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- There are no files associated with this item.
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