Publication: Investigation of rolling contact crack initiation in bainitic and pearlitic rail steels
Program
KU-Authors
KU Authors
Co-Authors
Sehitoglu, H.
Verzal, K.
Jiang, Y.
Advisor
Publication Date
2012
Language
English
Type
Journal Article
Journal Title
Journal ISSN
Volume Title
Abstract
The stress-strain history and the crack initiation lives of bainitic and head-hardened pearlitic rail steels were determined under rolling contact loading by implementing the semi-analytical Jiang-Sehitoglu rolling contact model that incorporates both ratchetting and multiaxial fatigue damage. The calculations revealed that the bainitic steel withstands higher loads than the pearlitic steel at low shear tractions, however; both materials behave in an increasingly similar manner as the shear tractions increase. Furthermore, maximum damage occurs in both steels when ratchetting and fatigue damage coincide on the surface. In addition to shedding light on the rolling contact fatigue (RCF) performance of bainitic and pearlitic rail steels, the current work also establishes a methodology for the realistic prediction of crack initiation under RCF.
Description
Source:
Fatigue and Fracture of Engineering Materials & Structures
Publisher:
Wiley
Keywords:
Subject
Engineering, Mechanical engineering, Materials science