Analysis of the polarization current responded to cyclic strain during corrosion fatigue of iron

Eiji Tada, Kazuhiko Noda, Shinji Kumai, Tooru Tsuru

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Corrosion fatigue tests of a commercial iron were carried out in a borate buffer solution containing sodium chloride at a constant passive potential. In order to detect crack initiation and quantify the extent of corrosion fatigue damage, the polarization current responding to the strain cycles has been studied. From this current, the current amplitude and the phase shift between the current and the strain were calculated. By analysis of these parameters, crack initiation was detected in such an early stage of about 10% of the fatigue life. The extent of the surface damage was detected from the distortion of the wave form due to the higher harmonics components. The corrosion fatigue process was investigated by the polarization current behavior.

Original languageEnglish
Pages (from-to)1249-1254
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume61
Issue number11
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Corrosion fatigue
corrosion
Iron
Polarization
Crack initiation
iron
polarization
crack initiation
Borates
Fatigue damage
Sodium chloride
Phase shift
Sodium Chloride
Buffers
damage
Fatigue of materials
fatigue tests
fatigue life
sodium chlorides
borates

Keywords

  • Corrosion fatigue
  • Crack initiation
  • Iron
  • Polarization current

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Analysis of the polarization current responded to cyclic strain during corrosion fatigue of iron. / Tada, Eiji; Noda, Kazuhiko; Kumai, Shinji; Tsuru, Tooru.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 61, No. 11, 1997, p. 1249-1254.

Research output: Contribution to journalArticle

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AU - Kumai, Shinji

AU - Tsuru, Tooru

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AB - Corrosion fatigue tests of a commercial iron were carried out in a borate buffer solution containing sodium chloride at a constant passive potential. In order to detect crack initiation and quantify the extent of corrosion fatigue damage, the polarization current responding to the strain cycles has been studied. From this current, the current amplitude and the phase shift between the current and the strain were calculated. By analysis of these parameters, crack initiation was detected in such an early stage of about 10% of the fatigue life. The extent of the surface damage was detected from the distortion of the wave form due to the higher harmonics components. The corrosion fatigue process was investigated by the polarization current behavior.

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