使用额定功率为1 kW的光纤激光器开展了激光直接沉积机场供油管网材料的实验研究，研究了激光扫描速度对沉积层显微组织、硬度、耐蚀性及耐磨性的影响。显微组织和硬度的实验结果表明：随着激光扫描速度的增加，沉积层厚度减小，基体发生的翘曲变形角度减小，沉积层在路径2上的峰值硬度逐渐升高。耐蚀性和耐磨性的实验结果表明，沉积层的耐磨性和耐蚀性对激光扫描速度具有非协同响应：当激光扫描速度为10 mm/s时，沉积层具有较好的耐蚀性，自腐蚀电流密度为基体的27.76%；当激光扫描速度为12 mm/s时，沉积层具有较好的耐磨性，磨损率分别为6 mm/s和10 mm/s扫描速度下沉积层磨损率的52%和42%。

A fiber laser with a rated power of 1 kW is used to perform a laser direct metal deposition experiment on an airport oil pipeline network material to explore the effects of laser scanning speed on microstructures, hardness, corrosion resistance, and wear resistance of the deposition layers. The experimental results of microstructure and hardness show that as the laser scanning speed increased, the deposition layer thickness and the warpage deformation angle of the substrate decreased, and the peak hardness of path 2 gradually increased. The experimental results of corrosion resistance and wear resistance show that the above performance of the deposition layers had an asynchronous response with the scanning speed. At the laser scanning speed of 10 mm/s, the deposition layer showed very high corrosion resistance, and its self-corrosion current density was 27.76% of the substrate. At the laser scanning speed of 12 mm/s, the deposition layer displayed high wear resistance, and its wear rates were 52% and 42% of the deposition layer prepared at scanning speeds of 6 mm/s and 10 mm/s, respectively.