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。
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 lasei＂ 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 reflectivitv on laser irradiated surface of metal.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2017年第6期31-36,共6页
Chinese Journal of Lasers
