Fatigue limit estimation for carburized steels with surface compressive residual stress considering residual stress relaxation

Kenta MINAMIZAWA, Jinta ARAKAWA, Hiroyuki AKEBONO, Koichiro NAMBU, Yuki NAKAMURA, Mamoru HAYAKAWA, Shoichi KIKUCHI

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The mechanism of residual stress relaxation for carburized steels was elucidated and their fatigue limit was estimated. The compressive residual stress in the carburized steel after rotating bending fatigue tests is mainly influenced by the relaxation during the compressive loading phase, although it increases at the early stage. The fatigue limit of carburized steels can be estimated according to the modified Goodman diagram considering the residual stress relaxation. The proposed equation shows the maximum value of the fatigue limit (1013 MPa) of carburized steel and the maximum value of the compressive residual stress contributing to the increased fatigue limit.

Original languageEnglish
Article number106846
JournalInternational Journal of Fatigue
Volume160
DOIs
Publication statusPublished - Jul 2022
Externally publishedYes

Keywords

  • Carburizing
  • Compressive residual stress
  • Fatigue limit
  • Residual stress relaxation
  • Retained austenite

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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