INVESTIGADORES
HEREÑU Silvina Andrea Noemi
congresos y reuniones científicas
Título:
Microstructural changes in a superferritic stainless steel during low cycle fatigue.
Autor/es:
S. HEREÑU ; M. G. MOSCATO; I. ALVAREZ-ARMAS; A. F. ARMAS
Lugar:
Aachen
Reunión:
Conferencia; Seventh international conference on low cycle fatigue; 2013
Institución organizadora:
The German Association for Materials Research and Testing (DVM)
Resumen:
This paper studies the influence of temperature on the cyclic behavior of superferritic stainless steel UNS S 44600 in two conditions: as-received (unaged, UA) and aged (100 hours at 475¨¬C, AG). The analysis of the friction and back stress and the dislocation structure have been carried out. The cyclic softening observed at room temperature in UA specimens is related with the decrease of back stress whereas is associated with the decrease of both components, friction and back stress , in AG samples. The initial cyclic hardening displayed at 475C agrees with an increase in ¥òF and ¥òB, due to dynamic strain aging in UA samples and due to spinodal decomposition in AG specimens.
