Effect of La on Microstructure and Grain-Refining Performance of Al-Ti-C Grain Refiner  

作　　者：许春香 梁丽萍 卢斌峰 张金山 梁伟 

机构地区：[1]School of Materials Science and Engineering, Taiyuan University of Technology

出　　处：《Journal of Rare Earths》2006年第5期596-601,共6页稀土学报（英文版）

基　　金：Project supported by the Natural Science Foundation of Shanxi Province (20011047);Patent Generalization Project ofShanxi Province (051025)

摘　　要：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.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.

关 键 词：Al-Ti-C grain refiner MICROSTRUCTURE refining performance LANTHANUM rare earths 

分 类 号：TG113.1[金属学及工艺—物理冶金]