金属材料的激光相变硬化机理及其工艺参数优化

Mechanism of Metal's Laser Transformation Hardening and Optimum of Laser Technical Parameters

简要介绍了激光表面技术中的激光相变硬化,阐述了金属材料的激光相变硬化机理,分析了激光功率、扫描速度和光斑直径等工艺参数对硬化效果的影响,指出用激光能量密度描述激光加工工艺参数之间的耦合作用对硬化效果的影响规律。

This thesis briefly introduces laser transformation hardening (LTH) among laser surface treatment technology,demonstrates the mechanism of metal's LTH and analyzes the influences of technical parameters such as laser power,scanning velocity and the size of laser beam on the hardening results,and points out the influence law of the coupling effect between technical parameters described by laser power density on the hardening results.