which includes the separated samples, the samples without any fracture is referred as ‘‘run out”. Fig. 4 shows the macrophotographs of fatigue test samples of F3 and F11 with a stress range of 324–360 MPa, respectively, showing the fracture path as described in Table 2. In Fig. 4a, the fracture started and progressed almost entirely at the fused metal, while the fracture initiated from FL which then deviated towards BM in Fig. 4b.