Prasada Rao, A. K. ; Das, K. ; Murty, B. S. ; Chakraborty, M. (2008) Microstructural features of as-cast A356 alloy inoculated with Sr, Sb modifiers and Al-Ti-C grain refiner simultaneously Materials Letters, 62 (2). pp. 273-275. ISSN 0167-577X
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.matlet.2007.05.020
Abstract
This article focuses on the microstructural refinement of as-cast A356 alloy, obtained by melt inoculation of the same. The inoculants used are Sr (modifier), Sb (modifier) and Al-Ti-C (grain refiner). Microstructural characterization of A356 alloy reveals that the Secondary Dendritic Arm Spacing (SDAS) of α-Al dendrites and size/morphology of eutectic silicon decrease by treating the melt with pre-defined amounts of Sr, Sb and Al-5Ti-2C grain refiner. Microstructure of the inoculated as-cast A356 alloy shows that, modified eutectic-silicon exhibits fine fibrous morphology at shorter melt holding, while the same exhibits fine lamellar morphology on longer melt holding.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Al-Si Alloy; Modification; Microstructure; Solidification; Grain Refinement |
| ID Code: | 64044 |
| Deposited On: | 04 Oct 2011 08:24 |
| Last Modified: | 04 Oct 2011 08:24 |
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