GH4099合金的飞秒激光去除阈值
Femtosecond Laser Removal Threshold of GH4099 Alloy
摘 要
采用500 fs脉宽飞秒激光对GH4099合金板进行表面材料去除加工，研究了激光功率对材料去除区域表面形貌、微区成分及直径的影响；采用最小二乘法对激光功率与去除区域直径进行线性拟合，确定了合金的激光去除阈值。结果表明：当激光功率不高于1.911 3 W时，GH4099合金表面存在一个去除区域A，其形貌与成分与基体的基本相同，当激光功率高于1.911 3 W时，在区域A中出现呈熔融凝固态的区域B，其成分中出现较多碳、氧元素；去除区域A、B的材料去除形式分别为静电剥离和热蒸发，激光去除阈值分别为0.413，12.9 J·cm-2。GH4099合金激光加工的合理激光能量密度为0.413~12.9 J·cm-2。
阈值
高温合金
材料去除
femtosecond laser
threshold
superalloy
material removal
Abstract
Surface material removal processing of GH4099 alloy plate was carried out by 500 fs femtosecond laser, and the effect of laser power on the morphology, micro-component and diameter of the material removal region was studied. The laser power and removal area diamenter was linearly fitted by least square method, and the removal threshold of the alloy was determined. The results show that when the laser power was not higher than 1.911 3 W, GH4099 alloy showed one removal area A having the same morphology and composition as the substrate, when the laser power was higher than 1.911 3 W, area B having melting-solidification morphology was present in the center of area A, and had more C and O elements than the substrate. The material removal forms of areas A and B were electrostatic stripping and thermal evaporation, and the laser removal thresholds were 0.413, 12.9 J·cm-2, respectively. The reasonable laser energy density of laser processing of GH4099 alloy was 0.413-12.9 J·cm-2.
中图分类号 TN249 DOI 10.11973/jxgccl202006005
所属栏目 试验研究
基金项目
收稿日期 2019/7/13
修改稿日期 2020/4/29
网络出版日期
作者单位点击查看
备注刘海建(1988-),男,江苏淮安人,高级工程师,硕士
引用该论文: LIU Haijian,CHEN Xu,MA Zhenwu,CHEN Feng. Femtosecond Laser Removal Threshold of GH4099 Alloy[J]. Materials for mechancial engineering, 2020, 44(6): 21～24
刘海建,陈旭,马振武,陈峰. GH4099合金的飞秒激光去除阈值[J]. 机械工程材料, 2020, 44(6): 21～24
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【4】XU G,DAI Y T,CUI J L,et al.Simulation and experiment of femtosecond laser polishing quartz material[J].Integrated Ferroelectrics, 2017,181(1):60-69.
【5】UKAR E,LAMIKIZ A,LÓPEZ DE LACALLE L N,et al.Laser polishing operation for die and moulds finishing[J].Advanced Materials Research, 2009,83/84/85/86:818-825.
【6】AMORUSO S,BRUZZESE R,WANG X,et al.Femtosecond laser ablation of nickel in vacuum[J].Journal of Physics D:Applied Physics, 2007,40(2):331-340.
【7】MA S,MCDONALD J P,TRYON B,et al.Femtosecond laser ablation regimes in a single-crystal superalloy[J].Metallurgical and Materials Transactions A, 2007,38(13):2349-2357.
【8】SEMALTIANOS N G,PERRIE W,FRENCH P,et al.Femtosecond laser ablation characteristics of nickel-based superalloy C263[J].Applied Physics A, 2009,94(4):999-1009.
【9】STAŠIĆ J,GAKOVIĆ B,TRTICA M,et al.Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064,532,and 266 nm:Comparative study[J].Laser and Particle Beams, 2012,30(2):249-257.
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