中国激光, 2017, 44 (6): 0601003, 网络出版: 2017-06-08  

气流环境下激光辐照金属能量耦合特性

Energy Coupling Properties Between Laser and Metal in Airflow
作者单位
中国工程物理研究院流体物理研究所, 四川 绵阳 621900
摘要
在马赫数为0.5气流条件下, 进行了激光辐照30CrMnSiA钢材料的温度测量实验。实验结果显示, 材料的温升速率和上升最高温度在有气流环境下比无气流环境下明显下降。利用数值反演方法获得了气流条件下激光加载面样品材料实际吸收热流密度变化以及温度变化。与无气流条件下的数据对比可发现, 相同温度对应的实际吸收热流密度在气流环境下大于无气流环境, 该结果是由气流条件加速样品材料的氧化影响激光金属反射率所致。
Abstract
Temperature measurement experiment of laser irradiated 30CrMnSiA steel with mach number of 0.5 airflow is performed, experimental results show that the temperature rising rate and maximum rising temperature are declined in airflow comparing with static condition. And the absorbed heat flux density and temperature history on laser irradiated surface with airflow are achieved by numerical inverse method. Comparing with the result on static condition, the absorbed and conducting heat flux with airflow is more than the one on static condition at the same temperature. It is analyzed that this result is due to accelerating oxidation reaction by airflow and influencing the reflectivity on laser irradiated surface of metal.
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金云声, 张黎, 张永强, 贺佳, 谭福利, 赵剑衡, 孙承纬. 气流环境下激光辐照金属能量耦合特性[J]. 中国激光, 2017, 44(6): 0601003. Jin Yunsheng, Zhang Li, Zhang Yongqiang, He Jia, Tan Fuli, Zhao Jianheng, Sun Chengwei. Energy Coupling Properties Between Laser and Metal in Airflow[J]. Chinese Journal of Lasers, 2017, 44(6): 0601003.

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