光斑搭接率对GH3030合金表面积碳及氧化物清洗质量的影响  

Effect of spot overlapping rate on surface area carbon and oxide cleaning quality of GH3030 alloy

作　　者：王蔚 王孝宇 刘伟军 邢飞 王静 Wang Wei;Wang Xiaoyu;Liu Weijun;Xing Fei;Wang Jing(School of Mechanical Engineering,Shenyang University of Technology,Shenyang,Liaoning,110870;Liaoning Key Laboratory of Laser Surface Engineering Technology,Shenyang,Liaoning,110870;Shenyang Huiyuan Automation Equipment Co.,Ltd,Shenyang,Liaoning,110169)

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870 [2]辽宁省激光表面工程技术重点实验室,辽宁沈阳110870 [3]沈阳慧远自动化设备有限公司,辽宁沈阳110169

出　　处：《红外与激光工程》2023年第2期149-158,共10页Infrared and Laser Engineering

基　　金：辽宁省教育厅2021年度面上项目(LJKZ0110);辽宁省揭榜挂帅科技攻关项目(2021JH1/10400077);辽宁省“兴辽英才计划”项目(XLYC1902022)。

摘　　要：采用200 W的纳秒脉冲光纤激光器对GH3030镍基高温合金表面积碳及氧化物进行了激光清洗实验研究,分析了激光光斑搭接率对清洗表面形貌、元素成分、相组成、表面粗糙度以及显微硬度的影响。结果表明:随着激光光斑搭接率从58.33%增大至70.83%,碳元素和氧元素含量均呈现先降低后升高的趋势,镍元素含量则先升高后降低,表面粗糙度先减小后增加。当光斑搭接率为66.67%时,碳元素和氧元素含量均下降到最低值,分别为5.01 wt%和1.40 wt%。同时,镍元素含量达到峰值,为72.96 wt%,表面粗糙度Ra减小至0.229μm,Rz减至1.47μm。改变激光光斑搭接率不会对GH3030高温合金的表面显微硬度产生显著影响。A 200 W nanosecond pulsed fiber laser is used to study the laser cleaning of surface area carbon and oxide of GH3030 nickel base superalloy. The effects of laser spot overlapping rate on the cleaned surface morphology, element composition, phase composition, surface roughness and microhardness are analyzed. The results show that as the overlapping ratio of laser spot increases from 58.33% to 70.83%, the content of carbon and oxygen decreases first and then increases, the content of nickel increases first and then decreases, and the surface roughness decreases first and then increases. When the spot overlapping rate is 66.67%, the contents of carbon and oxygen decrease to the lowest value, which are 5.01 wt% and 1.40 wt% respectively. At the same time, the content of nickel reaches the peak, which is 72.96 wt%. The surface roughness Ra decreases to0.229 μm and Rz reduces to 1.47 μm. The change of laser spot overlapping rate will not have a significant impact on the surface microhardness of GH3030 superalloy.

关 键 词：激光清洗 光斑搭接率 元素含量 表面粗糙度 表面形貌 

分 类 号：TN249[电子电信—物理电子学]