Influence of surface condition on the fatigue behaviour of specimens made of a SAE 5115 case-hardened steel

ABSTRACT The effect of different surface conditions on the fatigue properties of cyclically loaded bending specimens of the case‐hardened steel SAE 5115 (Material Number 1.7131) was investigated. The aim of the investigations was to achieve further knowledge of the processes that finally lead to the...

Full description

Saved in:
Bibliographic Details
Published in:Fatigue & fracture of engineering materials & structures 2006-03, Vol.29 (3), p.229-241
Main Authors: LAUE, S., BOMAS, H., HOFFMANN, F.
Format: Article
Language:English
Subjects:
Applied sciences
case-hardened steel
Exact sciences and technology
Fatigue
fracture mechanics approach
Fractures
internal oxidation
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metal fatigue
Metals. Metallurgy
Physical properties
shot peening
Steel
surface oxidation
weakest-link concept
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:ABSTRACT The effect of different surface conditions on the fatigue properties of cyclically loaded bending specimens of the case‐hardened steel SAE 5115 (Material Number 1.7131) was investigated. The aim of the investigations was to achieve further knowledge of the processes that finally lead to the failure of case‐hardened and cyclically loaded bending specimens. Surface roughness, microstructure and residual stress distribution were regarded as parameters that govern the fatigue process. On the basis of a well‐defined adjustment of different surface conditions the effect of internal oxidation, surface roughness and residual stresses on fatigue crack initiation and growth were assessed. The effect of different parameters on the endurance limit has been quantified by the application of a fracture mechanics and a weakest‐link approach. The calculations contributed to a deeper insight into the complex interaction between the parameters governing the fatigue process.
ISSN:8756-758X
1460-2695
DOI:10.1111/j.1460-2695.2005.00984.x