Influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W steel under gigacycle fatigue

Wei Li; Zhenduo Sun; Zhenyu Zhang; Hailong Deng; Tatsuo Sakai

doi:10.1016/j.ijfatigue.2014.11.004

Influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W steel under gigacycle fatigue

Wei Li^*
, Zhenduo Sun
, Zhenyu Zhang
, Hailong Deng
, Tatsuo Sakai

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology
Ritsumeikan University

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

28 Citations (Scopus)

Abstract

Axial loading test was performed to investigate the influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W Steel under gigacycle fatigue. The interior failures induced from inclusion and microstructural inhomogeneity become the predominant failure mode in the life regime beyond 10⁵ cycles. The case-carburizing has no effect on the fatigue strength with interior failure. Compared with the lower limit values of experimental S-N data, the predicted results by using GP distribution is relatively suitable. From the viewpoint of reliability, the modeling method of interior S-N curve with the maximum defect size at a given probability is satisfactory.

Original language	English
Pages (from-to)	66-74
Number of pages	9
Journal	International Journal of Fatigue
Volume	72
DOIs	https://doi.org/10.1016/j.ijfatigue.2014.11.004
Publication status	Published - Mar 2015

Keywords

Carburized Ni-Cr-W steel
Competing failure
Defect size distribution
Micro-defect
Prediction of S-N curve

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10.1016/j.ijfatigue.2014.11.004

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title = "Influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W steel under gigacycle fatigue",

abstract = "Axial loading test was performed to investigate the influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W Steel under gigacycle fatigue. The interior failures induced from inclusion and microstructural inhomogeneity become the predominant failure mode in the life regime beyond 105 cycles. The case-carburizing has no effect on the fatigue strength with interior failure. Compared with the lower limit values of experimental S-N data, the predicted results by using GP distribution is relatively suitable. From the viewpoint of reliability, the modeling method of interior S-N curve with the maximum defect size at a given probability is satisfactory.",

keywords = "Carburized Ni-Cr-W steel, Competing failure, Defect size distribution, Micro-defect, Prediction of S-N curve",

author = "Wei Li and Zhenduo Sun and Zhenyu Zhang and Hailong Deng and Tatsuo Sakai",

year = "2015",

month = mar,

doi = "10.1016/j.ijfatigue.2014.11.004",

language = "English",

volume = "72",

pages = "66--74",

journal = "International Journal of Fatigue",

issn = "0142-1123",

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T1 - Influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W steel under gigacycle fatigue

AU - Li, Wei

AU - Sun, Zhenduo

AU - Zhang, Zhenyu

AU - Deng, Hailong

AU - Sakai, Tatsuo

PY - 2015/3

Y1 - 2015/3

N2 - Axial loading test was performed to investigate the influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W Steel under gigacycle fatigue. The interior failures induced from inclusion and microstructural inhomogeneity become the predominant failure mode in the life regime beyond 105 cycles. The case-carburizing has no effect on the fatigue strength with interior failure. Compared with the lower limit values of experimental S-N data, the predicted results by using GP distribution is relatively suitable. From the viewpoint of reliability, the modeling method of interior S-N curve with the maximum defect size at a given probability is satisfactory.

AB - Axial loading test was performed to investigate the influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W Steel under gigacycle fatigue. The interior failures induced from inclusion and microstructural inhomogeneity become the predominant failure mode in the life regime beyond 105 cycles. The case-carburizing has no effect on the fatigue strength with interior failure. Compared with the lower limit values of experimental S-N data, the predicted results by using GP distribution is relatively suitable. From the viewpoint of reliability, the modeling method of interior S-N curve with the maximum defect size at a given probability is satisfactory.

KW - Carburized Ni-Cr-W steel

KW - Competing failure

KW - Defect size distribution

KW - Micro-defect

KW - Prediction of S-N curve

UR - https://www.scopus.com/pages/publications/84911994572

U2 - 10.1016/j.ijfatigue.2014.11.004

DO - 10.1016/j.ijfatigue.2014.11.004

M3 - Article

AN - SCOPUS:84911994572

SN - 0142-1123

VL - 72

SP - 66

EP - 74

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Influence of case-carburizing and micro-defect on competing failure behaviors of Ni-Cr-W steel under gigacycle fatigue

Abstract

Keywords

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