随着科技的不断发展进步,激光在工业生产中有越来越广泛的应用。由于激光加热快、方向性好、相干性强等特点,应用于表面改性的激光相变强化技术、激光表面熔凝处理、激光涂覆技术、激光表面合金化技术、激光冲击硬化技术、激光上釉技术等有了很大发展,对改变材料的机械性能、耐热性和耐腐蚀性等有重要作用。1 激光与金属的交互作用激光与金属交互作用的过程可按激光强度和辐照时间分为下列几个阶 With the continuous development of science and technology, laser in industrial production has more and more widely used. Due to the characteristics of fast laser heating, good directivity and strong coherence, laser phase-change hardening technology, laser surface melting process, laser coating technology, laser surface alloying technology, laser shock hardening technology, laser Glazing technology has great development, to change the mechanical properties of materials, heat resistance and corrosion resistance plays an important role. 1 laser and metal interaction Laser and metal interaction process according to laser intensity and irradiation time is divided into the following steps