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激光冲击处理(又称激光喷丸)技术是利用强脉冲激光导致的压力冲击波在金属材料表层产生应变硬化的一种新型表面强化技术。本文介绍激光冲击技术的发展简况,在约束模式下激光导致冲击波的基本理论模型,常用航空金属材料处理后力学性能的变化,分析了激光冲击处理技术在航空制造技术方面的应用,特别针对提高结构疲劳性能的需求,提出了激光冲击处理技术需要解决的工艺问题及其发展动向。
Laser shock treatment (also known as laser shot peening) technology is the use of strong pulsed laser pressure shock wave generated in the metal surface hardening of a new type of surface hardening technology. This paper introduces the development of laser shock technology, the basic theoretical model of laser induced shock wave in constrained mode, the change of mechanical properties after the common treatment of aviation metal materials, the application of laser shock processing technology in aviation manufacturing technology, especially for improving the structure Fatigue performance requirements, put forward the laser impact treatment technology to solve the problem and its development trends.