Influence of dislocation glide on the spinodal decomposition of fatigued duplex stainless steels

- Dislocations bands and microbands are developed in α phase of fatigued aged DSS.
- Inside these structures, demodulation of spinodal decomposition (SD) were found.
- This fact could take part in the cyclic softening displayed by DSS S32750.
- Cyclic tests at 475 °C show a saturation stage at the end of fatigue life.
- This could be explained by the effect of demodulation and creation of SD.