Table 5.
Average hardness H as measured by nanoindentation and Young’s modulus E of the respective AA7075 and DC05 layers in the AA7075/DC05 N2 L1/4 LMC architecture and resulting gradients ∆H and ∆E at interfaces. Yield stress and ultimate tensile stress of the monolithic AA7075 N2 and DC05 N2 materials as determined by uniaxial tensile tests.
| Material | AA7075/DC05 N2 LMC System | ||
|---|---|---|---|
| AA7075 Layers | DC05 Layers | Gradients (∆H, ∆E) | |
| Hardness H/GPa | 1.55 ± 0.08 | 2.66 ± 0.12 | 1.11 ± 0.14 |
| Young’s modulus E/GPa | 70 1 | 210 2 | 140 |
| Material | Monolithic Materials | ||
| AA7075 N2 Mono | DC05 N2 Mono | Difference | |
| Yield stress/MPa | 308 ± 6 | 575 ± 8 | 267 ± 10 |
| Ultimate tensile stress/MPa | 385 ± 4 | 620 ± 7 | 235 ± 8 |