Cyclic deformation behaviour of ferritic Fe-19Cr-4Ni-2Al alloy at elevated temperatures

S. M. Zhu, S. C. Tjong

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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.

Original languageEnglish
Pages (from-to)1023-1026
Number of pages4
JournalMaterials Science and Technology
Volume13
Issue number12
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

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