钛及钛合金的激光表面处理研究进展

Research Progress on Laser Surface Treatment of Titanium and Titanium Alloys

摘要:

激光表面处理是改善材料硬度、耐磨性和抗蚀性的有效途径。对钛及钛合金激光表面处理（激光表面合金化、激光熔覆和激光表面熔化）因可拓展其应用领域而备受关注。本文结合近年来的研究报道，全面综述2种激光表面处理即激光表面气体氮化和激光粉末合金化的影响因素，激光表面处理后表层组织、性能、缺陷控制以及激光参数的优化。在此基础上，阐述了目前存在的问题和今后的发展方向。

Abstract:

Laser surface treatment is an effective way to improve the hardness, and resistance to wear and corrosion. Laser surface treatment (laser surface alloying, laser cladding and laser surface melting) for titanium and titanium alloys have received more attention for it can expand their application. Combining with recent studies, this paper comprehensively overviewed the factors affecting two kinds of laser surface treatment methods, laser surface gas nitriding and laser surface powder alloying. The surface microstructure, performance, defect control after laser surface treatment and the optimization of laser parameters were also summarized. On this basis, current problems and future development were described.