Table 4: Dependance of the loading cycles with the morphologie of the fracture surface.
| Figure-No | Figure-10a | Figure-10b | Figure-10c | Figure-10d |
| Number of cycles | 23300 | 5000000 | 264190 | 301570 |
| Stress amplitude Mpa | 300 | 237 | 250 | 244 |
| Fracture | Ductile fracture with fatigue fracture | Big fracture surface with fatigue and trace of ductile fracture | Fatigue fracture with trans granular cleavage facets | Fatigue fracture with trans granular cleavage facets |