Creep-fatigue-oxidation interactions in a 9Cr–1Mo martensitic steel. Part II: Effect of compressive holding period on fatigue lifetime

Cyclic tests with compressive holding periods were carried out in air at 823 K on a modified 9Cr–1Mo martensitic steel. In accordance with other results published in the literature, compressive holding periods were found more deleterious than tensile ones, i.e. fatigue lifetimes were more severely r...

Full description

Saved in:
Bibliographic Details
Published in:International journal of fatigue 2008-04, Vol.30 (4), p.663-676
Main Authors: Fournier, B., Sauzay, M., Caës, C., Noblecourt, M., Mottot, M., Bougault, A., Rabeau, V., Pineau, A.
Format: Article
Language:English
Subjects:
9Cr
Compressive holding periods
Condensed Matter
Crack initiation
Creep
Fatigue
High temperature
Martensitic steel
Materials Science
Oxidation
Oxide cracking
Physics
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cyclic tests with compressive holding periods were carried out in air at 823 K on a modified 9Cr–1Mo martensitic steel. In accordance with other results published in the literature, compressive holding periods were found more deleterious than tensile ones, i.e. fatigue lifetimes were more severely reduced under compressive holding periods than under tensile holds. For all tested samples a strong influence of oxidation was observed, and a tensile mean stress was measured due to compressive holding periods. To understand the difference between compressive and tensile holding periods, a detailed study of the oxide layers mechanical behavior was carried out. Based on an extensive literature survey, focussed on the fracture behavior of oxide layers, and on Finite Element (FE) calculations, a general scheme for modelling creep-fatigue-oxidation interactions is proposed and discussed.
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2007.05.008