This project addresses the improvement of understanding on fatigue crack initiation processes at the grain-grain scale on single and directionally solidified Ni superalloy.

The anisotropic microstructure resulted strain, residual stress and dislocation density localisation are being investigated.

Fatigue crack micrograph and residual stress map
Fatigue crack micrograph and residual stress map
 
 

Researchers: Dr Jun Jiang, Dr Yongjun Guan, Dr Jie Yang and Dr Yu Wang