Issue 50

Z.-y. Han et alii, Frattura ed Integrità Strutturale, 50 (2019) 21-28; DOI: 10.3221/IGF-ESIS.50.03

a

b

quasi-cleavage zones

50

50

d

c

quasi-cleavage zones

50

50

Figure 6: SEM images of the fracture surfaces of X80 steels in (a) in air, (b) 2.6 % DO, (c) 4.7 % DO, (d) 6.8 % DO

25h

50h

75h

25h

50h

75h

100h

100h

DO=2.6%

DO=6.8%

Figure 7: Variation of the lateral morphology of the samples with testing time

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