Kumar, G. S. Vinod ; Murty, B. S. ; Chakraborty, M. (2005) Development of Al-Ti-C grain refiners and study of their grain refining efficiency on Al and Al-7Si alloy Journal of Alloys and Compounds, 396 (1-2). pp. 143-150. 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.2004.12.039
Abstract
Al-5Ti-0.8C and Al-5Ti-1.2C master alloys have been successfully prepared by reaction of K2TiF6 salt and graphite powder with molten Al. While the Al-5Ti-0.8C consists of some TiAl3 particles in addition to TiC particles in the Al matrix, the Al-5Ti-1.2C master alloy revealed the presence of only TiC particles. The grain refining efficiency of these two master alloys has been compared with that of the conventional Al-5Ti-1B master alloy on Al and Al-7Si alloy at different addition levels. Al-5Ti-1.2C master alloy was found to be the most efficient grain refiner for Al amongst the grain refiners studied. Even in case of Al-7Si alloy, the Al-5Ti-0.8C and Al-5Ti-1.2C master alloys performed better than conventional Al-5Ti-1B master alloy. However, the Al-5Ti-1.2C master alloy shows poor response to grain refinement in Al-7Si alloy at higher addition levels than the Al-5Ti-0.8C master alloy, indicating poisoning.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Castings; Scanning Electron Microscopy; X-ray Diffraction; Al-Ti-C |
| ID Code: | 73889 |
| Deposited On: | 08 Dec 2011 03:51 |
| Last Modified: | 08 Dec 2011 03:51 |
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