Laser Cladding Preparation and Wear Resistance of H13/Ni/WC Hybrid Powder Gradient Cladding Layer

Li Hongbo; Guo Meng; Wang Lin; Deng Chengxu; Luo Junting

doi:10.3788/LOP202158.0314006

Laser & Optoelectronics Progress, Volume. 58, Issue 3, 3140061(2021)

Laser Cladding Preparation and Wear Resistance of H13/Ni/WC Hybrid Powder Gradient Cladding Layer

Li Hongbo¹, Guo Meng¹, Wang Lin¹, Deng Chengxu¹, and Luo Junting²

¹Key Laboratory of Advanced Forging and Forming Technology and Science Ministry of Education, Yanshan University, Qinhuangdao , Hebei 066004, China

²State Key Laboratory of Preparation Technology and Science of Metastable Materials, Yanshan University, Qinhuangdao , Hebei 066004, China

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Figures & Tables(16)

Fig. 1. Powder morphologies. （a) H13；（b) Ni/WC；（c) H13/Ni/WC

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Fig. 2. Laser rapid cladding system

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Fig. 3. Appearances of cladding layer. （a） Surface macromorphology；（b） cross-section morphology

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Fig. 4. Microstructures of cross-section of cladding layer. (a) Low magnification； (b) high magnification

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Fig. 5. SEM morphology of cross-section of cladding layer and elemental line-scanning. (a) SEM morphology; (b) elemental line-scanning

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Fig. 6. Microhardness distribution on the cross-section of cladding layer

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Fig. 7. Hardness curves of matrix and cladding layer at different temperatures

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Fig. 8. Surface morphologies of matrix and cladding layer after 10 thermal fatigue tests. (a) H13 matrix； (b) cladding layer

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Fig. 9. Surface morphologies of matrix and cladding layer after 25 thermal fatigue tests. (a) H13 matrix； (b) cladding layer

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Fig. 10. Wear surface morphologies of cladding layer at different temperatures. (a) 350℃； (b) 450℃； (c) 550 ℃

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Fig. 11. Comparison of wear depth between matrix and cladding layer

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Table 1. Chemical composition of H13 powder
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Table 1. Chemical composition of H13 powder
Element Mass fraction/%
C 0.35
Si 1.1
Mn 0.35
Cr 5
Mo 1.5
V 1
O 0.027
Fe Bal.

Table 2. Chemical composition of Ni/W powder
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Table 2. Chemical composition of Ni/W powder
Component Mass fraction/%
Ni 10
WC 90
Impurity ≤0.1

Table 3. Powder ratio of gradient cladding layer
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Table 3. Powder ratio of gradient cladding layer
Layer Mass fraction/%
Ni/WC H13
First floor（No.1) 15 85
Second floor(No.2) 30 70

Table 4. H13/Ni/WC gradient cladding layer laser cladding process parameters
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Table 4. H13/Ni/WC gradient cladding layer laser cladding process parameters
Layer Powder Laser power/kW Preset powder thickness/mm Scanning speed/(mm·s^-1) Defocus quantity/mm Laser scanning interval/mm
No.1 85%H13+15%Ni/WC 1.4 0.6 7 30 1
No.2 70%H13+30%Ni/WC 1.5 0.8

Table 5. Factor level table of friction and wear test of matrix and cladding layer
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Table 5. Factor level table of friction and wear test of matrix and cladding layer
Level Load/N Temperature/℃ Number of revolution
1 320 350 7200
2 480 450 7200
3 640 550 7200

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Li Hongbo, Guo Meng, Wang Lin, Deng Chengxu, Luo Junting. Laser Cladding Preparation and Wear Resistance of H13/Ni/WC Hybrid Powder Gradient Cladding Layer[J]. Laser & Optoelectronics Progress, 2021, 58(3): 3140061

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