Fig. 1. Laser melting deposition additive manufacturing system

Fig. 2. Deposited samples treated with different hot rolling reduction drafts

Fig. 3. Sampling position and size of tensile specimen with different reduction drafts. (a) 15%; (b) 30%; (c) 50%; (d) size of tensile specimen

Fig. 4. SEM images of deposited samples with different reduction drafts. (a) 0; (b) 15%; (c) 30%; (d) 50%

Fig. 5. SEM morphologies of equiaxed grains in the deposited layer with different reduction drafts. (a) 0; (b) 15%; (c) 30%; (d) 50%

Fig. 6. Line scanning results of fusion line of samples with different hot rolling reduction drafts. (a) Non-rolled; (b) reduction draft of 50%

Fig. 7. Dot diagram of micro-hardness testing

Fig. 8. Micro-hardness of deposited samples with different reduction drafts. (a) 0; (b) 15%; (c) 30%; (d) 50%

Fig. 9. Stress-strain curves of laser melting deposition samples with different reduction drafts. (a) Stress-strain curves; (b) non-rolled specimen; (c) specimen with reduction draft of 50%