Shixin Chen, Weining Lei, Weibin Ren, Bing Xue. Microstructures and Performance of Laser Cladding and Quenching Remanufactured Cladding Layer on QT700 Ductile Cast Iron Gear Surface[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0514003
- Laser & Optoelectronics Progress
- Vol. 58, Issue 5, 0514003 (2021)
Fig. 1. Experiment processes of laser cladding and laser quenching
Fig. 2. Size of impact sample
Fig. 3. Microstructures of cladding layer. (a) Microstructure of the top cladding layer; (b) microstructure of the middle cladding layer; (c) microstructure of the bottom cladding layer; (d) interface between the cladding layer and the substrate
Fig. 4. Comparison of microstructures of cladding layer before and after quenching. (a) Microstructures on the top of cladding layer; (b) microstructures in the middle of cladding layer
Fig. 5. SEM images and EDS spectra of chill microstructure at the interface area between cladding layer and substrate. (a) Before laser cladding; (b) after laser quenching
Fig. 6. Main strengthening precipitations in the cladding coating
Fig. 7. Microhardness distribution on the cross-section of the sample before and after laser quenching
Fig. 8. Friction coefficient curves and friction and wear morphologies of cladding layer surface
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Table 1. Chemical composition of materials used in experiment
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