Zhang Tiangang, Zhang Qian, Yao Bo, Li Baoxuan. Numerical Simulation of Temperature Field and Stress Field of Ni-Based Laser Cladding Layer on TC4 Surface[J]. Laser & Optoelectronics Progress, 2021, 58(3): 3140031
- Laser & Optoelectronics Progress
- Vol. 58, Issue 3, 3140031 (2021)
Fig. 1. Material powders for cladding. (a) TC4; (b) Ni60
Fig. 2. TruDisk4002 coaxial powder feeding fiber laser
Fig. 3. Macro-morphology of single-pass laser cladding layer
Fig. 4. Cross-sectional SEM morphology of single-pass laser cladding layer
Fig. 5. Gaussian heat source model
Fig. 6. Finite element model
Fig. 7. Thermo-physical performance parameters versus temperature. (a) Thermal conductivity; (b) specific heat; (c) density; (d) linear expansion coefficient
Fig. 8. Mechanical performance parameters versus temperature. (a) Modulus of elasticity; (b) Poisson’s ratio; (c) yield stress
Fig. 9. Comprehensive heat transfer coefficient versus temperature
Fig. 10. Temperature contours at different moments. (a) t=3 s; (b) t=6 s
Fig. 11. Actual high-definition motion track of laser heat source
Fig. 12. Temperature contours of local area at t=3 s. (a) Cross section; (b) longitudinal section; (c) magnification of cross section
Fig. 13. Residual stress contours after cooling. (a) Surface residual stress; (b) cross-sectional residual stress
Fig. 14. Crack morphology of cladding layer. (a) Edge; (b) bonding area
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Table 1. Process parameters for laser cladding
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