13th International Conference on Fracture June 16–21, 2013, Beijing, China Fig. 4. Backscattered electron image showing the phase particle distribution on the fracture surface (S3). 1 2 3 1mm Fig. 5. Optical images of the as-polished fracture surface of sample S3 taken from regions 1-3 in Fig. 4. Fig. 6. Micro crack initiation at slip bands in the grain interior. [12] Micro-cracks 5μm 100μm a) c) b) Region 2 Region 1 Region 3 -5-
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