Effect of La on Microstructure and Grain-Refining Performance of Al- Ti- C Grain Refiner
来源期刊：JOURNAL OF RARE EARTHS2006年第5期
论文作者：Zhang Jinshan Liang Wei Xu Chunxiang Liang Liping Lu Binfeng
Key words：Al-Ti-C grain refiner; microstructure; refining performance; lanthanum; rare earths;
Abstract: Al-Ti-C grain refiner was prepared by SHS (self-propagating high-temperature synthesis )-melting technique.The effect of La on the microstructures of grain refiner was studied by OM, TEM, SEM, XRD, and EDS. The experimental results indicate that La can improve the wettability between liquid aluminum and graphite; the addition of La results in dispersive distribution of TiAl3 and TiC particles in the matrix. An excellent grain refining performance of Al-Ti-C grain refiner on commercially pure Al was obtained.
Zhang Jinshan1，Liang Wei1，Xu Chunxiang1，Liang Liping1，Lu Binfeng1
(1.School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)
Abstract:Al-Ti-C grain refiner was prepared by SHS (self-propagating high-temperature synthesis )-melting technique.The effect of La on the microstructures of grain refiner was studied by OM, TEM, SEM, XRD, and EDS. The experimental results indicate that La can improve the wettability between liquid aluminum and graphite; the addition of La results in dispersive distribution of TiAl3 and TiC particles in the matrix. An excellent grain refining performance of Al-Ti-C grain refiner on commercially pure Al was obtained.
Key words:Al-Ti-C grain refiner; microstructure; refining performance; lanthanum; rare earths;
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