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Effects of a single tensile overload on fatigue crack growth in a 316L steel
- Source :
- Fatigue Fracture of Engineering Materials and Structures. 22:1041-1051
- Publication Year :
- 1999
- Publisher :
- Wiley, 1999.
-
Abstract
- The aim of this study was to investigate the effects of a single tensile overload on subsequent fatigue crack growth in a 316L stainless steel. Fatigue tests were conducted under the plane stress condition, and further supplemented with compliance measurements and field emission scanning electron microscopy (FESEM) observations. Effects of a tensile overload, e.g. initial acceleration and subsequent retardation of fatigue crack growth, were explained and quantified by FESEM and compliance measurements. The FESEM observations suggest that the initial crack growth acceleration stems from void and quasi-cleavage fracture within the fatigue damage zone in the vicinity of the crack tip. Systematic compliance measurements taken during fatigue crack growth suggest that the overall crack growth retardation is related to strain hardening and residual compressive stress produced by the plastic deformation associated with the tensile overload.
- Subjects :
- Void (astronomy)
Materials science
business.industry
Mechanical Engineering
Structural engineering
Strain hardening exponent
Paris' law
Crack growth resistance curve
Crack closure
Mechanics of Materials
mental disorders
Ultimate tensile strength
General Materials Science
Composite material
business
Plane stress
Stress concentration
Subjects
Details
- ISSN :
- 14602695 and 8756758X
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Fatigue Fracture of Engineering Materials and Structures
- Accession number :
- edsair.doi...........98dd6f964fb3887dd46f99e7e68e4855