Characteristics of Flame Spraying Performance of Laser Remelting
With the flame spraying and laser cladding technique, the surface of 45＃ steel is covered firstly with a layer of WC-12Co ceramic powder, and then clad with laser. The laser cladding microstructure and micro-appearance is analyzed with SEM; interface element distributing with EDS; and micro-penetration hardness distributing with HXD-1000B Vickers hardness tester. After laser-cladding, the original slice-like structure of flame spraying layer changes into a denser clad coat, which is metallurgic with the base. The coating micro-organization presents as polygon , dendrite arm and granularity from the surface into depth. The hardness of coat is highest on the surface, decreases with the increase of the depth, and has an abrupt change on the interface between coat and metallic base.
flame spraying laser cladding microstructure characteristic
PENG Ru-shu LIU Qiong WENG Zhao-hui
School of Mechanical Engineering,University of South China,Hengyang 421001,China School of Mechanical Engineering, University of South China,Hengyang 421001,China
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
566-568
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）