Table 6.
Average hardness H as measured by nanoindentation and Young’s modulus E of the respective AA2024, DC05, and Ti-G1 layers in AA2024/Ti-G1/DC05 N3 LMC systems and resulting gradients ∆H and ∆E at interfaces. Yield stress and ultimate tensile stress of the monolithic AA2024 N3, Ti-G1 N3, and DC05 N3 materials, as determined by uniaxial tensile tests.
| Material | AA2024/Ti-G1/DC05 N3 LMC Systems | |||
|---|---|---|---|---|
| AA2024 Layers | Ti-G1 Layers | DC05 Layers | Gradients (∆H, ∆E) | |
| Hardness H/GPa | 2.58 ± 0.05 | 2.78 ± 0.15 | 3.20 ± 0.13 | Ti-Al: 0.20 ± 0.16 |
| Fe-Ti: 0.42 ± 0.20 | ||||
| Fe-Al: 0.62 ± 0.14 | ||||
| Young’s modulus E/GPa | 69 1 | 103 2 | 210 3 | Ti-Al: 64 |
| Fe-Ti: 107 | ||||
| Fe-Al: 141 | ||||
| Material | Monolithic Materials | |||
| AA2024 N3 Mono | Ti-G1 N3 Mono | DC05 N3 Mono | Difference | |
| Yield stress/MPa | 639 ± 10 | 538 ± 4 | 554 ± 1 | Al-Ti: 101 ± 11 |
| Fe-Ti: 16 ± 5 | ||||
| Al-Fe: 85 ± 10 | ||||
| Ultimate tensile stress/MPa | 654 ± 12 | 713 ± 2 | 704 ± 8 | Ti-Al: 59 ± 12 |
| Ti-Fe: 9 ± 8 | ||||
| Fe-Al: 50 ± 14 | ||||