Bohong Li, Shaoqing Guo, Biao Zhou, Renyao Qin, Tianyuan Wang, Zijun Zhao. Establishment and Verification of Thermo-Mechanical Coupled Model for Laser Direct Deposition of Titanium Alloy[J]. Laser & Optoelectronics Progress, 2022, 59(11): 1114007
- Laser & Optoelectronics Progress
- Vol. 59, Issue 11, 1114007 (2022)
Fig. 1. Schematic of laser direct deposition process and equipment
Fig. 2. Size of wall part and measurement location
Fig. 3. Finite element model
Fig. 4. Thermo-physical parameters of TC4 alloy
Fig. 5. Mechanical parameters of TC4 alloy
Fig. 6. Simulated results of temperature field. (a) Cloud map of temperature field at t=175.5 s; (b) comparison of in situ measured and simulated temperatures; (c) thermal cycle curves of midpoint temperature of each layer
Fig. 7. Result of deformation. (a) Cloud map of z-direction distortion; (b) comparison of in situ measured and simulated deformation
Fig. 8. Results of residual stress. (a) Cloud map of residual stress distribution and path definition; (b) residual stress along path
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