Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/61454
Title: Synthesis mechanism of an Al-Ti-C grain refiner master alloy prepared by a new method
Authors: Zhang, B.Q. 
Fang, H.S.
Lu, L. 
Lai, M.O. 
Ma, H.T.
Li, J.G.
Issue Date: Aug-2003
Source: Zhang, B.Q.,Fang, H.S.,Lu, L.,Lai, M.O.,Ma, H.T.,Li, J.G. (2003-08). Synthesis mechanism of an Al-Ti-C grain refiner master alloy prepared by a new method. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 34 A (8) : 1727-1733. ScholarBank@NUS Repository.
Abstract: The mechanisms of in-situ synthesis of an Al-Ti-C grain-refiner master alloy, prepared by adding a powder mixture of potassium titanium fluoride and carbon into an aluminum melt, have been systematically studied. It was found that vigorous reactions occurred at the initial stage of reaction and then slowed down. After about 20 minutes, the reactions, which led the formation of blocky titanium aluminides and submicron titanium carbides in the aluminum matrix, appeared to reach completion. Potassium titanium fluoride reacted with aluminum and carbon at 724 °C and 736 °C, respectively, resulting in the formation of titanium aluminides and titanium carbides in the aluminum matrix as well as in the formation of a low-melting-point slag of binary potassium aluminofluorides. The reaction between potassium titanium fluoride and carbon is believed to be the predominant mechanism in the synthesis of TiC by this method.
Source Title: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
URI: http://scholarbank.nus.edu.sg/handle/10635/61454
ISSN: 10735623
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

36
checked on Jan 19, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.