Effect of Crack Initiation Size on Fatigue Strength in 0.85% Carbon Steel

Chobin Makabe; Tatsujiro Miyazaki; Naoki Nakane; Shinya Yamazaki; Takashi Makishi; Anggit Murdani

doi:10.4028/www.scientific.net/MSF.750.112

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HomeMaterials Science ForumMaterials Science Forum Vol. 750Effect of Crack Initiation Size on Fatigue...

Effect of Crack Initiation Size on Fatigue Strength in 0.85% Carbon Steel

Abstract:

The fatigue limit of a plain specimen of a tool steel JIS SK85 was investigated. The initial crack length in the fatigue process is related to the size of a single crystal in the case of low carbon steel. However, that is independent of the crystal size in the case of pure aluminum, a lamellar pearlitic steel, etc. In this study, the relationship between the initial crack length and the fatigue limit was investigated. The original microstructure of this material includes a spherical microstructure. However, after heat treatment under some conditions, that microstructure changed to a lamellar microstructure. The fatigue limit of heat-treated SK85 could be evaluated by an equation in which the parameters are the hardness and initial crack length. Finally, this result was discussed based on the observations of crack growth behavior and fracture surface.

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Periodical:

Materials Science Forum (Volume 750)

Pages:

112-115

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.750.112

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Online since:

March 2013

Authors:

Chobin Makabe, Tatsujiro Miyazaki, Naoki Nakane, Shinya Yamazaki, Takashi Makishi, Anggit Murdani

Keywords:

Crack Growth, Fatigue, Fatigue Limit, Hardness, Heat Treatment, Microstructure, Tool Steel

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References

[1] Y. Murakami and M. Endo, Effects of Hardness and Crack Geometry on ΔKth of Small Cracks Emanating from Small Defects, in: K. J. Miller and E. R. de los Rios (Eds. ), The Behavior of Short Fatigue Cracks, EGF Publ. 1 Mech. Eng. Publ. , 1986, pp.275-293.

DOI: 10.1016/b978-008043011-9/50044-2

Google Scholar

[2] S. Hamada, Y. Sakoda, D. Sasaki, M. Ueda and H. Noguchi, Evaluation of Fatigue Limit Characteristics of Lamellar Pearlitic Steel in Consideration of Microstructure, J. Soc. Mater. Sci. Japan. 60 (2011) 790-795.

DOI: 10.2472/jsms.60.790

Google Scholar

[3] H. Nisitani and S. Nisida, Change in Surface States and Incipient Fatigue Cracks in Electro-Polished Low Carbon Steel (Plain and Notched Specimen) under Rotating Bending Stress, Bull. of the JSME. 13 (1970) 961-967.

DOI: 10.1299/jsme1958.13.961

Google Scholar