Fig. 1. Horizontal holes and dome structures of different sizes

Fig. 2. Powder discharge hole is designed in closed cavity

Fig. 3. Microstructure state of SLM samples. (a) Schematic diagram of layer-by-layer turning angle; (b) cross-sectional state of forming samples; (c) horizontal cross-sectional schematic diagram of forming samples; (d) horizontal cross-sectional microstructure of a superalloy sample; (e) vertical cross-sectional schematic diagram of forming samples; (f) vertical cross-sectional microstructure of a superalloy sample

Fig. 4. Stress contraction line forming process