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

Yongpeng Tang; Atsushi Hosoi; Yasuyuki Morita; Yang Ju

doi:10.1016/j.ijfatigue.2013.08.012

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

Yongpeng Tang, Atsushi Hosoi, Yasuyuki Morita, Yang Ju^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 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 language	English
Pages (from-to)	69-74
Number of pages	6
Journal	International Journal of Fatigue
Volume	56
DOIs	https://doi.org/10.1016/j.ijfatigue.2013.08.012
Publication status	Published - 2013
Externally published	Yes

Keywords

Dislocation
Electric current
Fatigue crack initiation
Microhardness
Plastic strain

ASJC Scopus subject areas

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

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10.1016/j.ijfatigue.2013.08.012

Cite this

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title = "Restoration of fatigue damage in stainless steel by high-density electric current",

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.",

keywords = "Dislocation, Electric current, Fatigue crack initiation, Microhardness, Plastic strain",

author = "Yongpeng Tang and Atsushi Hosoi and Yasuyuki Morita and Yang Ju",

note = "Funding Information: This work supported by the Japan Society for the Promotion of Science under Grant-in-Aid for Young Scientists (A) 23686021 .",

year = "2013",

doi = "10.1016/j.ijfatigue.2013.08.012",

language = "English",

volume = "56",

pages = "69--74",

journal = "International Journal of Fatigue",

issn = "0142-1123",

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TY - JOUR

T1 - Restoration of fatigue damage in stainless steel by high-density electric current

AU - Tang, Yongpeng

AU - Hosoi, Atsushi

AU - Morita, Yasuyuki

AU - Ju, Yang

N1 - Funding Information: This work supported by the Japan Society for the Promotion of Science under Grant-in-Aid for Young Scientists (A) 23686021 .

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - Dislocation

KW - Electric current

KW - Fatigue crack initiation

KW - Microhardness

KW - Plastic strain

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DO - 10.1016/j.ijfatigue.2013.08.012

M3 - Article

AN - SCOPUS:84884907497

SN - 0142-1123

VL - 56

SP - 69

EP - 74

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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