Fig. 8: The IPF maps of fatigued specimens after SSRT tests.
From: Improvement of stress corrosion cracking resistance by low cycle fatigue of a CrNiMoV steel

The crack propagates along the lath martensite boundaries (white arrow) for fatigued specimens with loading of 10,000 and 20,000 cycles in (a) and (b), and in some cases the main crack can propagate along the grain boundaries in (b).