中国激光, 2013, 40 (2): 0203007, 网络出版: 2013-01-08
扫描速度对激光熔覆铁基非晶复合涂层组织与性能的影响
Effects of Scanning Speed on Microstructures and Properties of Laser Cladding Fe-Based Amorphous Composite Coatings
摘要
在304L不锈钢表面激光熔覆制备了Fe-Cr-Si-P非晶复合涂层。分析了扫描速度对涂层组织及性能的影响。涂层主要由非晶和Fe3P、Fe2Si等晶体相组成。随着扫描速度的增加,树枝晶细化,外延生长层宽度减小。扫描速度为400 mm/min的涂层,显微硬度为821.3 HV0.2,在100 N载荷下涂层的摩擦系数为0.076,具有较好的性能。
Abstract
Fe-Cr-Si-P amorphous composite coatings are fabricated on 304L substrates by laser cladding. The effects of laser scanning speed on microstructure and properties of Fe-based amorphous coating are investigated. The results show that the coating mainly consists of amorphous, Fe3P and Fe2Si phases. With the increase of scanning speed, the dendrites gradually refine and the width of epitaxial growth layer decreases. When the laser scanning speed is 400 mm/min, the maximum microhardness of the coating is 821.3 HV0.2, the coefficient of friction under the load of 100 N are 0.076, and the coating shows better properties.
鲁青龙, 王彦芳, 栗荔, 肖丽君, 李欣棉, 于治国, 石志强. 扫描速度对激光熔覆铁基非晶复合涂层组织与性能的影响[J]. 中国激光, 2013, 40(2): 0203007. Lu Qinglong, Wang Yanfang, Li Li, Xiao Lijun, Li Xinmian, Yu Zhiguo, Shi Zhiqiang. Effects of Scanning Speed on Microstructures and Properties of Laser Cladding Fe-Based Amorphous Composite Coatings[J]. Chinese Journal of Lasers, 2013, 40(2): 0203007.