Kumar, G. S. Vinod ; Murty, B. S. ; Chakraborty, M. (2009) Grain refinement response of LM25 alloy towards Al-Ti-C and Al-Ti-B grain refiners Journal of Alloys and Compounds, 472 (1-2). pp. 112-120. 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.2008.04.095
Abstract
The grain refining response of LM25 (Al-7Si-0.35Mg) alloy has been studied with the newly made Al-5Ti-0.8C and Al-5Ti-1.2C master alloys which have been successfully prepared in the laboratory by reaction of K2TiF6 salt and graphite powder with Al. The results have been compared with the grain refining efficiency of Al-3B, Al-1Ti-3B and Al-5Ti-1B master alloys on LM25 alloy at different addition levels. The results show that the grain refining efficiency of even lowest addition level (0.1 wt.%) of both Al-5Ti-0.8C and Al-5Ti-1.2C master alloys are equivalent to the 1.0 wt.% addition levels of Al-1Ti-3B and better than 1.0 wt.% of Al-3B master alloy. At higher addition levels of Al-5Ti-0.8C and Al-5Ti-1.2C master alloys exhibits fading in grain structure on longer holding due to agglomeration of TiC particles and poisoning of Si.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Casting; Intermetallics; Grain Refinement; Al-Ti-C; Al-Ti-B |
| ID Code: | 73898 |
| Deposited On: | 08 Dec 2011 03:55 |
| Last Modified: | 08 Dec 2011 03:55 |
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