Analysis of the fatigue dislocation structures in a duplex stainless steelalleged with nitrogen

Citation
Jb. Vogt et al., Analysis of the fatigue dislocation structures in a duplex stainless steelalleged with nitrogen, Z METALLKUN, 90(5), 1999, pp. 323-328
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science",Metallurgy
Journal title
ZEITSCHRIFT FUR METALLKUNDE
ISSN journal
00443093 → ACNP
Volume
90
Issue
5
Year of publication
1999
Pages
323 - 328
Database
ISI
SICI code
0044-3093(199905)90:5<323:AOTFDS>2.0.ZU;2-4
Abstract
The low cycle fatigue behaviour of a duplex stainless steel containing 0.15 % N is studied. TEM analysis of dislocation arrangements and determination of crack initiation are carried out according to the strain level. Two regi mes of cyclic response and fatigue damage have been determined. In the low strain regime (Delta epsilon(t) < 0.8%), the cyclic plasticity is carried b y the austenite while in the high strain regime (Delta epsilon(t) > 0.8%) b oth the austenite and the ferrite accommodate the plastic deformation.