Study on Laser Ablation Threshold and Cleaning Process of High-Temperature Carbonization/Oxidation Deposition Layer on GH3128 Surface

Liang Wang; Liushuai Yu; Yaxing Wang; Jin Zhuo; Zhenhe Yu; Zhijun Chen; Jianhua Yao

doi:10.3788/CJL240909

Chinese Journal of Lasers, Volume. 52, Issue 4, 0402202(2025)

Study on Laser Ablation Threshold and Cleaning Process of High-Temperature Carbonization/Oxidation Deposition Layer on GH3128 Surface

Liang Wang^1,2,3, Liushuai Yu^1,2,3, Yaxing Wang^1,2,3, Jin Zhuo^1,2,3, Zhenhe Yu⁴, Zhijun Chen^1,2,3, and Jianhua Yao^1,2,3、*

Author Affiliations

¹Institute of Advanced Laser Manufacturing, Zhejiang University of Technology, Hangzhou 310023, Zhejiang , China

²Ministry of Education/Zhejiang Provincial Key Laboratory of Special Equipment Manufacturing and Advanced Processing Technology, Hangzhou 310023, Zhejiang , China

³School of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang , China

⁴AECC Shenyang Liming Aero-Engine Co., Ltd., Shenyang 110043, Liaoning , China

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Figures & Tables(13)

Fig. 1. Analysis of surface and cross section of deposition layer. (a) Macroscopic and microscopic morphologies of surface of deposition layer; (b) XRD analysis of deposition layer; (c)(d) SEM morphologies of deposition layer surface; (e) cross-section morphology of deposition layer; (f)‒(i) distributions of main elements in cross section of deposition layer

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Fig. 2. Laser cleaning principle diagrams. (a) Infrared nanosecond pulse laser; (b) structures of scanning galvanometer system and spot focusing system; (c) scanning direction and cleaning direction of laser spot

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Fig. 3. Laser cleaning experiment results of loose deposition layer. (a) Original deposition layer; (b) laser cleaning result when power is 20 W (F=0.71 J/cm²); (c) laser cleaning result when power is 25 W (F=0.89 J/cm²); (d) laser cleaning result when power is 30 W (F=1.07 J/cm²)

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Fig. 4. Laser cleaning experiment of dense deposition layer. (a) 60 W (F=2.14 J/cm²); (b) 70 W (F=2.50 J/cm²); (c) 80 W (F=2.85 J/cm²); (d) 90 W (F=3.21 J/cm²)

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Fig. 5. SEM morphologies and element distributions of loose deposition after laser cleaning. (a) 25 W (F=0.89 J/cm²); (b) 30 W (F=1.07 J/cm²)

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Fig. 6. SEM morphologies and element distributions of mixed melt after laser cleaning. (a) 60 W (F=2.14 J/cm²); (b) 70 W (F=2.50 J/cm²); (c) 80 W (F=2.85 J/cm²); (d) 90 W (F=3.21 J/cm²)

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Fig. 7. XPS analysis of after laser cleaning

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Fig. 8. XPS analysis after 80 W laser cleaning

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Fig. 9. Laser cleaning mechanism of high temperature carbonization/oxidation deposition layer on GH3128 surface

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Table 1. Chemical compositions of GH3128 superalloy
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Table 1. Chemical compositions of GH3128 superalloy
Element Cr W Mo Al Ti Fe B Ce Zr Mn Si C Ni
Mass fraction /% 20.320 8.040 8.120 0.670 0.560 0.270 0.005 0.050 0.060 0.027 0.022 0.030 Bal.

Table 2. Laser parameters
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Table 2. Laser parameters
Laser parameter Value
Wavelength /nm 1064
Laser power /W 200
Spot diameter /μm 115
Pulse width /ns 30
Pulse frequency /kHz 270
Maximum pulse energy /mJ 0.76

Table 3. Quantitative analysis of main elements in laser cleaning area
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Table 3. Quantitative analysis of main elements in laser cleaning area
Power Mass fraction /%
C O Ni Cr
Original 16.3 30.7 37.5 8.6
P=20 W 18.6 26.5 38.7 6.5
P=25 W 8.7 13.5 55.2 5.1
P=30 W 5.8 5.2 65.7 5.7

Table 4. Quantitative analysis of main elements in laser cleaning area
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Table 4. Quantitative analysis of main elements in laser cleaning area
Power Mass fraction /%
C O Ni Cr
P=60 W 4.3 7.8 59.5 7.5
P=70 W 3.5 5.4 64.6 7.0
P=80 W 2.7 1.1 68.3 8.7
P=90 W 2.1 2.9 72.8 5.9

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Liang Wang, Liushuai Yu, Yaxing Wang, Jin Zhuo, Zhenhe Yu, Zhijun Chen, Jianhua Yao. Study on Laser Ablation Threshold and Cleaning Process of High-Temperature Carbonization/Oxidation Deposition Layer on GH3128 Surface[J]. Chinese Journal of Lasers, 2025, 52(4): 0402202

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