In:
International Journal of Materials Research, Walter de Gruyter GmbH, Vol. 99, No. 7 ( 2008-07-01), p. 734-738
Kurzfassung:
The serrations observed on the stress–strain curves of a Fe-22Mn-0.6C wt.% steel present all the phenomenological features associated with dynamic strain ageing, including negative strain rate sensitivity and thermal activation. We show that the activation energy is, however, inexplicably low and that the dynamic strain ageing contribution to work-hardening is limited, i. e. mechanical twinning is the dominant strain hardening mechanism. Finally, novel in-situ experiments are used to study the dynamic behaviour of intense strain localisation bands which form on tensile samples. In spite of the localisation behaviour seen in tensile tests, stamped parts do not present any surface defects.
Materialart:
Online-Ressource
ISSN:
2195-8556
,
1862-5282
Sprache:
Englisch
Verlag:
Walter de Gruyter GmbH
Publikationsdatum:
2008
ZDB Id:
2232675-3
ZDB Id:
2128058-7
ZDB Id:
203021-4