Fig. 1. TC11 titanium alloy powder. (a) Particle size distribution; (b) SEM image

Fig. 2. “Meander” type scanning strategy. (a) Nth layer; (b) (N+1)th layer

Fig. 3. Size of tensile mechanical samples at room temperature

Fig. 4. Macrostructures of TC11 titanium alloy under different deposition time. (a) 45 min; (b) 30 min

Fig. 5. Microstructures of equiaxed and columnar grain regions under different magnifications. (a) Equiaxed grain region, magnification of 500 times; (b) equiaxed grain region, magnification of 1250 times; (c) columnar grain region,magnification of 500 times; (d) columnar grain region,magnification of 1250 times

Fig. 6. Macrostructure and microstructures of layer band of TC11 titanium alloy.(a) Macrostructure; (b)(c)(d) microstructures

Fig. 7. Microstructure of double annealed TC11 titanium alloy. (a) Magnification of 200 times;(b) magnification of 1250 times

Fig. 8. Fracture morphology of TC11 titanium alloy at room temperature. (a)(b) as-deposited in Z direction; (c)(d) double annealed in Z direction; (e)(f) as-deposited in X-Y direction