Table 1.
Comparison of mechanical properties for solid Ti-6Al-4V and Co-26Cr-6Mo.
| Material | Microstructure | HV (GPa) | HRC | YS (GPa) | UTS (GPa) | Elongation (%) |
|---|---|---|---|---|---|---|
| Wrought Ti-6Al-4V | Coarse acicular α-phase | 3.8 | 48 | 1.17 | 1.23 | 12 |
| EBM (z) Ti-6Al-4V | Acicular α-phase | 3.6 | 38 | 1.03 | 1.11 | 13 |
| EBM (x,y) Ti-6Al-4V | α′-martensite + α-phase | 4.1 | 41 | 1.10 | 1.11 | 11 |
| ASTM Grade 5 (nominal) Ti-6Al-4V | Acicular α-phase plates | 3.4 | 37 | 0.9 | 1.00 | 15 |
| ASTM-F75 (wrought) Co-26Cr-6Mo | Equiaxed grains with annealing twins | 2.8 | 30 | 0.45 | 0.66 | 10 |
| EBM (z) Co-26Cr-6Mo | Columnar precipitates (Cr23C6) | 4.6 | 48 | 0.51 | 1.45 | 3.6 |
| EBM (x,y) Co-26Cr-6Mo | Columnar precipitates (Cr23C6) | — | — | 0.77 | 0.84 | 2.7 |
| EBM (z) + HIP Co-26Cr-6Mo | Equiaxed fcc grains with annealing twins | 3.6 | 31 | 0.60 | 1.15 | 32 |
| EBM (x,y) + HIP Co-26Cr-6Mo | Equiaxed fcc grains with annealing twins | — | — | 0.63 | 0.99 | 20 |