Abstract
Cyclic stress response of ferritic Fe-19Cr-4Ni-2Al alloy was investigated under low cycle fatigue at elevated temperatures. The deformation microstructure developed was examined by transmission electron microscopy. The results showed that the alloy exhibited marked cyclic hardening at 773 K but continuous cyclic softening at 923 K. The cyclic hardening was considered to be associated with dynamic strain aging while the cyclic softening was interpreted in terms of the precipitate-dislocation interaction. © 1997 The Institute of Materials.
| Original language | English |
|---|---|
| Pages (from-to) | 1023-1026 |
| Journal | Materials Science and Technology |
| Volume | 13 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 1997 |
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