Prasada Rao, A. K. ; Das, K. ; Murty, B. S. ; Chakraborty, M. (2009) Al-Ti-C-Sr master alloy - A melt inoculant for simultaneous grain refinement and modification of hypoeutectic Al-Si alloys Journal of Alloys and Compounds, 480 (2). L49-L51. ISSN 0925-8388
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jallcom.2009.02.147
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 Al4Sr phases formed in situ in the Al-matrix. TiC particles initiate the refinement of primary α-Al through heterogeneous nucleation in molten hypoeutectic Al-Si alloy, while Al4Sr 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Metals and Alloys; Intermetallics; Scanning Electron Microscopy (SEM); Microstructure; Metal Matrix Composites |
| ID Code: | 73900 |
| Deposited On: | 08 Dec 2011 03:56 |
| Last Modified: | 08 Dec 2011 03:58 |
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