Issue 49

Y. Chang et alii, Frattura ed Integrità Strutturale, 49 (2019) 1-11; DOI: 10.3221/IGF-ESIS.49.01 9 Figure 9: Microstructural feature of sample A2 (RB, R = ‒ 1 , σ a = 750 MPa, N f = 5.08 ╳ 10 7 ), (a) SEM image showing sampling location (quadrate rabbet); (b) BFI; (c) DFI of dashed green box in (b); (d,e) SAD patterns of the left and right dashed yellow circles in (b). Figure 10: Microstructural feature of sample B5 (UL, R = 0.3, σ a = 430 MPa, N f = 8.70 ╳ 10 8 ), (a) SEM image showing sampling location (quadrate rabbet); (b) BFI; (c) DFI of dashed green box in (b); (d,e) SAD patterns of the left and right dashed circles in (b).