Issue 78

A. Sancak et alii, Fracture and Structural Integrity, 78 (2026) 186-206; DOI: 10.3221/IGF-ESIS.78.11

Figure 7: a) HRB hardness values of the reference and corrosion-exposed specimens. Bars indicate mean ± standard deviation, and circles indicate individual specimens ( n =3 per group). b) Relationship between individual hardness values and absorbed impact energy for all experimental specimens. The line represents the simple linear fit ( n =33). Group definitions are given in Tab. 2.

Figure 8: Side-view stereomicroscope observations of uncorroded reference Charpy V-notch specimens tested at a) 0 °C, b) -20 °C, c) 23 °C and d) -40 °C temperatures. The images show the fracture-path morphology and crack deviation across the remaining ligament after impact testing. Note: The visible hardness indentation marks in panels (a) and (d) were produced after Charpy impact testing and therefore did not affect the impact results. The fracture-surface images of the reference and seawater-exposed specimens also show differences in macroscopic fracture appearance. Some specimens exhibited relatively straight and symmetric fracture separation, whereas others showed more

199