(1. 北京科技大学 材料学院， 北京 100083；
2. 郑州工业大学 材料中心， 郑州 450002；
3. 北京有色金属研究总院 复合材料中心， 北京 100088)
摘 要: 利用SEM，XRD，TEM等手段对原位反应生成TiC粒子的喷射沉积Al-8Fe-1.3V-1.7Si合金的显微组织进行了分析与研究，并对合金机械性能进行了测试。结果表明，TiC粒子的生成对合金的显微组织有一定的细化作用，并增加了弥散强化相的总体积分数，从而导致合金的综合性能有了一定的提高。
关键字: 喷射沉积； 原位反应； 快速凝固
properties of spray formed Al-8Fe-1.3V-1.7Si alloy
（1. Department of Materials Science and Technology,
University of Science and Technology Beijing, Beijing 100083, P.R.China；
2. Research Center for Materials,
Zhengzhou University of Technology,Zhengzhou 450002, P.R.China;
3. General Research Institute for Nonferrous Metals, Beijing 100088, P.R.China）
Abstract:The effects of TiC particle formed by in-situ reaction on the microstructures of spray formed Al-8Fe-1.3V-1.7Si alloys were studied by means of XRD, TEM and SEM. The properties of the alloys after hot extrusion were also tested. The forming of TiC particles refines the second phases and the matrix grains, and increases the volume fraction of the reinforced phases. As a result, the comprehensive properties of the alloys are significantly increased.
Key words: spray forming; in-situ reaction; rapid solidification
