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研究了激光功率对TC4钛合金熔覆层组织与抗摩擦磨损性能的影响。结果表明,激光功率对熔覆层的组织、显微硬度、抗摩擦磨损性能有一定影响,但对元素分布没有影响。熔覆层比基体具有更好的抗氧化性和更高的显微硬度,但抗摩擦磨损性能下降。当激光功率为2500 W时,熔覆层最窄,呈不规则波浪状,结合区域附近有孔隙,整体效果较差。当激光功率为2750 W时,结合区域附近有少量单独气泡,但熔覆层的平均显微硬度最高。当激光功率为3000W时,熔覆层整体形貌和组织的质量最好,熔覆层与基体结合紧密,没有熔渣或孔隙,形成了性能良好的冶金结合,并且熔覆层的抗摩擦磨损性能最接近基体。
The effect of laser power on microstructure and friction and wear resistance of TC4 titanium alloy cladding layer was studied. The results show that the laser power has some influence on the microstructure, microhardness and anti-friction and wear properties of the coating, but has no effect on the elemental distribution. The cladding layer has better oxidation resistance and higher microhardness than the matrix, but the anti-friction and wear properties are reduced. When the laser power is 2500 W, the cladding layer has the narrowest and irregular wave shape, and there are voids near the bonding area, the overall effect is poor. When the laser power is 2750 W, there are a few individual bubbles in the vicinity of the bonding area, but the average microhardness of the cladding layer is the highest. When the laser power is 3000W, the overall morphology and microstructure of the cladding layer is the best, the cladding layer is closely integrated with the substrate, there is no slag or voids, and a good metallurgical bond is formed, and the friction and wear of the cladding layer Performance closest to the substrate.