INVESTIGADORES
ALVAREZ Iris
artículos
Título:
Dynamic strain aging effects on low-cycle fatigue of AISI 430F
Autor/es:
M AVALOS; I ALVAREZ; A ARMAS
Revista:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Editorial:
Elsevier
Referencias:
Lugar: Cambridge; Año: 2009 vol. 513 p. 1 - 7
ISSN:
0921-5093
Resumen:
The effects of dynamic strain aging (DSA) on the cyclic mechanical behavior were nvestigated in a ferritic steel type AISI 430F. Strain-rate changes performed during cyclic tests showa negative strain-rate dependence of the flow stress for temperatures ranging from 200ºC to 450ºC. Low-cycle fatigue curves exhibit prominent cyclic hardening at 400ºC and 450ºC. The influence of the embrittlement phenomena on the hardening of this ferritic steel was also investigated by performing aging treatments at 400ºC and 450ºC in the alloy. These results suggest that a DSA mechanism is operative in this material in a temperature range between 300ºC and 400ºC. Stress relaxation experimental results are also discussed in terms of dynamic strain aging.
