以Ti,SiC混合粉末作为预置合金涂层,采用2kW连续Nd:YAG固体激光器进行激光熔覆处理,在6061铝合金表面借助于接触反应法制备原位自生TiC颗粒增强Al-Ti复合材料涂层.试验结果表明:采用合适的激光辐照工艺参数,可获得增强相TiC弥散分布,以Ti-Al金属间化合物及A1过饱和固溶体为主要组成相的复合材料熔覆层组织.TiC颗粒与复合材料基体润湿良好,熔覆层结晶致密,与6061铝合金基材呈良好的冶金结合,可明显地改善铝合金的表面性能.
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