Fig. 1. Schematic of two-level progressive model of locality -integration. (a) Local model; (b) integral model

Fig. 2. Three-level progressive model of heat source-locality -structural parts.(a) Heat source model; (b) local model; (c) Structural part model

Fig. 3. Thermal conductivity of powder versus temperature

Fig. 4. Simulated thermal conductivity of materials versus temperature

Fig. 5. Schematic of heat source model and element partition

Fig. 6. SEM image of weld path section

Fig. 7. Simulated weld path section

Fig. 8. Schematic of local model

Fig. 9. Element partition of local model

Fig. 10. Simulation results of local model

Fig. 11. Value getting method of local model

Fig. 12. Fitting curves of simulation results