Table 4 The effect of surface layer properties on crack nucleation and propagation [49]
From: Effect of Machined Surface Integrity on Fatigue Performance of Metal Workpiece: A Review
| Â | Crack nucleation | Crack propagation |
|---|---|---|
Surface roughness | Accelerates | No effect |
Cold work | Retards | Accelerates |
Residual compressive stress | Minor or no effect | Retards |