激光在材料表面改性中的应用及研究进展

激光作为高能热源极大丰富了材料表面改性的方法，被国内外学者广泛用于材料表面改性。本文介绍了表面激光改性中一些处理办法及其研究进展。着重介绍了激光表面相变硬化、激光表面熔凝、激光表面合金化与激光表面熔覆等的应用研究。论述了其应用范围、组织性能及变化机理研究，并提出存在的问题及解决措施，最后对激光表面改性技术进行了展望。

Methods of material surface modification have been enriched by the application of laser as high thermal energy. The paper presents some specific methods of laser surface treatment and their progress, especially on laser surface transformation hardening, laser surface melting, laser surface alloying and laser surface cladding etc. The paper states their application area, microstructure, properties and mechanism of treatment. The prospect of laser surface treatment was discussed at the end.