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Performance comparison under different laser powers
| Laser power (W) | Rm (MPa) | Rp0.2 (MPa) | ɛPa 2 |
|---|---|---|---|
| 270 | 1,104 | 1,158 | 15.1 |
| 300 | 1,106 | 1,060 | 17.6 |
| 330 | 990 | 883 | 16.2 |
| 360 | 959 | 866 | 14.7 |
Comparison of the chemical composition of declared, powder, and as-fabricated 18Ni300
| Element, wt.% | Ni | Mo | Co | Ti | Cr | C | Si | Mn |
|---|---|---|---|---|---|---|---|---|
| Powder | 17.8 | 4.5 | 8.6 | 1 | 0.11 | <0.01 | <0.032 | 0.002 |
Formation process parameters of the 18Ni300 powder
| Laser power (W) | Scanning speed (mm/s) | Path spacing (mm) | Layer thickness (μm) |
|---|---|---|---|
| 270 | 1,000 | 0.11 | 50 |
| 300 | 1,000 | 0.11 | 50 |
| 330 | 1,000 | 0.11 | 50 |
| 360 | 1,000 | 0.11 | 50 |