PSI - Issue 13

Marijana Milković et al. / Procedia Structural Integrity 13 (2018) 1861 – 1866 Marijana Milkovi ć / Structural Integrity Procedia 00 (2018) 000–000

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Figure 4 a) Arrow marked on the surface of the electropolished part of the specimen “3” represents the positions of lines cut out with FIB b) Dimensions of lines cut out with FIB on specimen “3” after 1 000 cycles (Mag 600x)

Loading direction

Loading direction

Fig. 5 Suface of the specimen „3“ at magnification 2000x a) after 6 000 cycles, b) after 658 122 cycles (Ra=0.28389 in transversal direction and Ra=0.2795 in longitudinal direction)

Figure 6 The correlation between residual stress and roughness parameter Ra in different stage of fatigue loading