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
- Laser & Optoelectronics Progress
- Vol. 58, Issue 3, 3140061 (2021)
Fig. 1. Powder morphologies. （a) H13； （b) Ni/WC； （c) H13/Ni/WC
Fig. 2. Laser rapid cladding system
Fig. 3. Appearances of cladding layer. （a） Surface macromorphology； （b） cross-section morphology
Fig. 4. Microstructures of cross-section of cladding layer. (a) Low magnification； (b) high magnification
Fig. 5. SEM morphology of cross-section of cladding layer and elemental line-scanning. (a) SEM morphology; (b) elemental line-scanning
Fig. 6. Microhardness distribution on the cross-section of cladding layer
Fig. 7. Hardness curves of matrix and cladding layer at different temperatures
Fig. 8. Surface morphologies of matrix and cladding layer after 10 thermal fatigue tests. (a) H13 matrix； (b) cladding layer
Fig. 9. Surface morphologies of matrix and cladding layer after 25 thermal fatigue tests. (a) H13 matrix； (b) cladding layer
Fig. 10. Wear surface morphologies of cladding layer at different temperatures. (a) 350℃； (b) 450℃； (c) 550 ℃
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 2. Chemical composition of Ni/W powder
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Table 3. Powder ratio of gradient cladding layer
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Table 4. H13/Ni/WC gradient cladding layer laser cladding process parameters
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Table 5. Factor level table of friction and wear test of matrix and cladding layer
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