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利用扫描电镜对预应力简单结构件强激光破坏实验的部分试件残片进行了表面、断口和金相观察 ,分析了强激光对 L Y12 (CZ)铝合金材料性能的影响 ,初步分析了热力联合加载下材料失效的原因和基本特征 ,为进一步分析激光破坏机理提供了细观损伤的依据。
Scanning electron microscope (SEM) was used to observe the surface, fracture and microstructure of some specimens of strong prestressed simple structural parts. The effects of intense laser on the properties of LY12 (CZ) aluminum alloy were analyzed. The reason and basic characteristics of the material failure under loading are provided for the basis of further analyzing the mechanism of laser damage.