Restoration of fatigue damage in stainless steel by high-density electric current

Yongpeng Tang, Atsushi Hosoi, Yasuyuki Morita, Yang Ju

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

To investigate the effect of high-density electric current on healing of the fatigue damage, the recovery of residual plastic strain was quantitatively evaluated with the digital image correlation method. The microhardness was measured within the plastic zone at the root of notch. Furthermore, the dislocation structures before and after the application of electric current were investigated by transmission electron microscopy to further understand the mechanics of the healing effect. It was concluded that the fatigue damage was healed by a decrease in dislocation density. As a result, fatigue crack initiation was delayed by the healing of fatigue damage.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalInternational Journal of Fatigue
Volume56
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Fatigue Damage
Electric Current
Stainless Steel
Fatigue damage
Electric currents
Restoration
Stainless steel
Dislocation
Plastic Zone
Microhardness
Fatigue Crack
Crack Initiation
Correlation methods
Notch
Transmission Electron Microscopy
Digital Image
Crack initiation
Mechanics
Plastics
Plastic deformation

Keywords

  • Dislocation
  • Electric current
  • Fatigue crack initiation
  • Microhardness
  • Plastic strain

ASJC Scopus subject areas

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

Cite this

Restoration of fatigue damage in stainless steel by high-density electric current. / Tang, Yongpeng; Hosoi, Atsushi; Morita, Yasuyuki; Ju, Yang.

In: International Journal of Fatigue, Vol. 56, 2013, p. 69-74.

Research output: Contribution to journalArticle

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