纳秒脉冲激光清洗镍基合金表面碳层的数值模拟与实验研究

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-05-09 DOI:10.1016/j.optlastec.2025.113142

Tao Wang , Yufan Xie , Zeyu Luo , Lei Zhu

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引用次数: 0

摘要

针对航空发动机部件除碳需求，采用有限元分析方法，建立了纳秒脉冲激光对镍基高温合金（IN625）表面碳层清洗的三维传热模型。研究了不同激光功率和光斑重叠率下的温度演变和表面形貌。实验验证表明，增加激光功率可以提高表面峰值温度，显著提高烧蚀深度。而光斑重叠率对清洗效率的影响较弱，过度重叠（> 60%）会引起热积累引起二次烧蚀。模拟烧蚀深度与实验烧蚀深度的平均偏差为9.18%（功率变化）和7.85%（重叠率），验证了模型的可靠性。结合有限元仿真和实际清洗实验，优化后的工艺参数为激光功率40 W，重叠率60%，整体清洗效果最佳。

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Numerical simulation and experimental study on nanosecond pulsed laser cleaning of carbon layer on nickel-based alloy surface

In response to the demand for carbon deposit removal in aero-engine components, a three-dimensional heat transfer model for nanosecond pulsed laser cleaning of carbon layers on nickel-based superalloy (IN625) surfaces was established using finite element analysis. The temperature evolution and surface morphology are investigated under varying laser powers and spot overlap rates. Experimental validation revealed that increasing laser power elevates the peak surface temperature and significantly enhances ablation depth. While spot overlap rate has a weaker influence on cleaning efficiency, excessive overlap (>60 %) induces secondary ablation due to heat accumulation. The average deviation between simulated and experimental ablation depths was 9.18 % (power variation) and 7.85 % (overlap rate), confirming model reliability. Combined with the finite element simulation and actual cleaning experiments, the optimized process parameters are 40 W laser power and 60 % overlap rate, at which the overall cleaning effect is optimal.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems