Anisotropic high cycle fatigue behaviour of duplex stainless steels: influence of microstresses
2002 (English)In: International Journal of Materials Research - Zeitschrift für Metallkunde, ISSN 1862-5282, Vol. 93, no 1, 7-11 p.Article in journal (Refereed) Published
The anisotropic high cycle fatigue behaviour has been investigated for a duplex stainless steel in as-received and prestrained condition. It was found that the anisotropy of the fatigue limit is different from the anisotropy of yield strength. The main reason for this is the influence of microstresses on fatigue crack initiation. Fatigue cracks are seen to nucleate preferably in the austenite phase, which has tensile microstresses. Prestraining alters the microstresses from being higher in the transverse direction to being higher in the rolling direction. At the same time, the fatigue limit is changed from being higher in the rolling direction to being higher in the transverse direction.
Place, publisher, year, edition, pages
2002. Vol. 93, no 1, 7-11 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-30022Local ID: 15473OAI: oai:DiVA.org:liu-30022DiVA: diva2:250842