Acceleration and retardation of fatigue crack growth rate due to room temperature creep at crack tip in a 304 stainless steel

Room temperature creep (RTC) at a crack tip and its influence on the fatigue crack growth behavior of a 304 stainless steel have been studied at room temperature. A time-dependent deformation has been observed at the crack tips under various stress intensity factors. The deformation increases with i...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2006-10, Vol.41 (19), p.6431-6434
Main Authors: JIE ZHAO, TAO MO, NIE, De-Fu, REN, Ming-Fa, GUO, Xing-Lin, CHEN, Wei-Xing
Format: Article
Language:English
Subjects:
Acceleration
Applied sciences
Austenitic stainless steels
Crack propagation
Crack tips
Creep
Creep (materials)
Deformation
Exact sciences and technology
Fatigue failure
Fracture mechanics
Fracture surfaces
Fractures
Growth rate
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metal fatigue
Metals. Metallurgy
Propagation modes
Room temperature
Stainless steel
Stainless steels
Stress intensity factor
Stress intensity factors
Temperature dependence
Time dependence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Room temperature creep (RTC) at a crack tip and its influence on the fatigue crack growth behavior of a 304 stainless steel have been studied at room temperature. A time-dependent deformation has been observed at the crack tips under various stress intensity factors. The deformation increases with increasing stress intensity factor. Either acceleration or retardation of fatigue crack growth rate is found after holding at KRTC, which depends on the load pattern. A demarcation line is observed on the fracture surface following the holding period. This implies that the crack propagation root or mode changed after the hold time.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-0502-0