Xiaoteng Zhang, Zewen Li, Yiqing Zhou, Zhonghua Shen. Perforation effect of CW laser irradiation on aluminum alloy under subsonic flow[J]. Infrared and Laser Engineering, 2022, 51(2): 20210883
- Infrared and Laser Engineering
- Vol. 51, Issue 2, 20210883 (2022)
Fig. 1. Diagram of experimental device
Fig. 2. Aluminum plate model
Fig. 3. Surface morphology of aluminum alloy at different laser power density of 834 W/cm2 under 0.6 Ma airflow
Fig. 4. Surface temperature distribution of aluminum alloy by thermal imager at different times and laser power density of 834 W/cm2 under 0.6 Ma airflow
Fig. 5. Temperature rise process at the center point of aluminum alloy under the action of airflow at 0.6 Ma and laser power density of 834 W/cm2
Fig. 6. Temperature rise history of aluminum alloy center under laser irradiation with different power densities under 0.6 Ma airflow
Fig. 7. Ablation morphology of 7075 aluminum alloy under 0.6 Ma airflow
Fig. 8. Perforation time and pore size of aluminum alloy irradiated by different laser power densities under 0.6 Ma airflow
Fig. 9. Effect of different flow rates on perforation time under the action of 691 W/cm2 laser power density
Fig. 10. Temperature rise curves at first perforation point (a) and center point (b) at 0 Ma and 0.1 Ma at laser power density 691 W/cm2
Fig. 11. 691 W/cm2 laser irradiation ablation morphology of 7075 aluminum alloy
Fig. 12. Central temperature rise curves at 0.1 Ma , 0.2 Ma and 0.3 Ma at 691 W/cm2 laser power density
Fig. 13. Laser irradiation of 7075 aluminum alloy at 691 W/cm2 laser power density. (a) Ablation morphology at 0.1 Ma ; (b) Ablation morphology at 0.2 Ma ; (c) Ablation morphology at 0.3 Ma
Fig. 14. Temperature rise curves at the center of 0.3 Ma , 0.4 Ma and 0.5 Ma at 691 W/cm2 laser power density
Fig. 15. Laser irradiation of 7075 aluminum alloy at 691 W/cm2 laser power density. (a) 0.3 Ma ablation morphology; (b) 0.4Ma ablation morphology; (c) 0.5 Ma ablation morphology
Fig. 16. Central temperature rise curves at 0.5 Ma , 0.6 Ma and 0.7 Ma at 691 W/cm2 laser power density
Fig. 17. Laser irradiation of 7075 aluminum alloy at 691 W/cm2 laser power density. (a) Ablation morphology at 0.5 Ma ; (b) Ablation morphology at 0.6 Ma ; (c) Ablation morphology at 0.7 Ma
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Table 1. Experimental parameters: Laser power density and airflow velocity
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