Fig. 1. Laser melting deposition additive manufacturing system

Fig. 2. External physical field assistance equipment. (a) (b) Ultrasonic vibration platforms; (c) water cooled substrate

Fig. 3. Sampling position and size of deposited sample and tensile sample. (a) Deposited sample; (b) sampling position and size of tensile specimen

Fig. 4. Microstructure morphologies of deposited samples with different processing conditions. (a)(d) Air-cooling; (b)(e) water-cooling; (c)(f) ultrasonic vibration assistance

Fig. 5. Microstructure and morphology of deposited parts under different process conditions. (a) Air-cooling; (b) water-cooling; (c) ultrasonic vibration assistance

Fig. 6. Micro-hardness of deposited samples under different processing conditions

Fig. 7. Tensile properties of deposited parts under different processing conditions