Fig. 1. Two-dimensional discrete lattice spot

Fig. 2. Finite element model on account of numerical simulation of temperature field during laser transformation hardening based on beam discretization

Fig. 3. Temperature-field distributions. (a) Overall temperature distribution; (b) xz cross-section temperature distribution

Fig. 4. Temperature variation of each point with time

Fig. 5. Temperature distributions on different paths at different laser powers. (a) Path A; (b) path B

Fig. 6. Morphologies of hardened layer with different laser powers[22]. (a) P=4500 W; (b) P=5000 W; (c) P=5500 W; (d) P=6000 W

Fig. 7. Temperature distributions on different paths at different laser loading time. (a) Path A; (b) path B

Fig. 8. Morphologies of hardened layer with different laser loading time. (a) t=0.1 s; (b) t=0.2 s; (c) t=0.3 s; (d) t=0.4 s

Fig. 9. Maximum depths of hardened layer obtained under different conditions. (a) Different laser powers; (b) different laser loading time