Effect of overload on the fatigue threshold stress intensity factor range (ΔKth) of SUS316

Yasuaki Hashikura; Keiji Houjou; Yuji Miyazaki; Koji Takahashi; Kotoji Ando

doi:10.11181/hpi.47.314

Journal of High Pressure Institute of Japan

Online ISSN : 1347-9598
Print ISSN : 0387-0154
ISSN-L : 0387-0154

Orijinal Paper

Effect of overload on the fatigue threshold stress intensity factor range (ΔK_th) of SUS316

Yasuaki Hashikura, Keiji Houjou, Yuji Miyazaki, Koji Takahashi, Kotoji Ando

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Keywords: Overload, Fatigue, Stainless steel, Threshold stress intensity factor range

JOURNAL FREE ACCESS

2009 Volume 47 Issue 5 Pages 314-320

DOI https://doi.org/10.11181/hpi.47.314

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Abstract

The effects of overload on the ΔK_th of SUS316 were studied in this study. Tensile overload was applied to a compact tension (CT) specimen. Then, fatigue tests were carried out to determine the resultant ΔK_th. It was found that the value of ΔK_th increases as increasing the overload. The results were discussed from the viewpoint of fracture mechanics. The size of compressive residual stress is the key factor controlling the value of ΔK_th. Fractgraphic observation of fracture surface after fatigue tests were also carried out.

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