Table 2.
Processing parameters of LENS™ fabricated Ti6Al4V-Al12Si compositionally graded structures.
Processing Schematic Ti6AI4V  AI12Si |
Section | Laser Power (W) | Powder Feed Rate (g/min) | Hatch Scan Speed (cm/min) | Contour Scan Speed (cm/min) | Specific Energy Input per Scan (J/mm3) | |
|---|---|---|---|---|---|---|---|
| Powder Feeder 1 (Al12Si) | Powder Feeder 2 (Ti6Al4V) | ||||||
 |
(Ti64+Al12Si)1 | 390 → 300 | 6 → 9.5 | 17.3 → 11.3 | 97.5 | 91.4 | 3.98 → 5.17 |
 |
Pure Al12Si | 300 | 9.5 | 0 | 89.4 | 83.8 | 4.34 |
 |
(Ti64+Al12Si)2 | 300 → 390 | 9.5 → 6 | 11.3 → 17.3 | 97.5 | 91.4 | 3.98 → 5.17 |
 |
Pure Ti64 | 425 | 0 | 17.3 | 65 | 61 | 8.45 |