Ductile and Brittle Striations

Forsyth [14] recognized and described two general types of striations the ductile and the brittle one. They are schematized in Fig. 2.37 [36]. Both types of striations are transgranular. Ductile striations lay on different individual planes corresponding to single grains that macroscopically form, all together, a plateau normal to the maximum tensile stress direction, as shown in Fig. 2.37a. They are called 

2 Morphological Aspects of Fatigue Crack Formation and Growth A H 

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Fig. 2.37 Schematic difference between ductile and brittle striations a ductile striations. b brittle striations. c ductile profiles, d brittle profiles (modified from [37])...

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