强激光对预应力结构件破坏的细观分析
Mesoscopic analysis of pre-loaded simple structures irradiated by high power laser
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摘要: 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LY12(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。Abstract: In this paper, the samplesurface, fracture surface and metallagraphic structure are examined by SEM of the loaded beams and plates irradiated by CW CO2 laser, and the influence of irradiation of high power laser in the material properties of LY12 is analysed then the reason and character of material failure by the thermal and mechanical force are investigated.
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Key words:
- high power laser /
- fracture /
- metallograph
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