Crack Paths 2012

Figure 5. A small crack growing from a FIB hole (a) with two

turning points correlated with the sub-grain microstructure (b,c).

Figure 6. The effect of martensitic laths on the direction of small crack growth from a

FIB hole. An overall surface view of the FIB hole with cracks (a). A subsurface cross

section and FIB image of the subgrain structures affecting the crack growth (b).

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