Fatigue behavior in an Fe-N binary ferritic steel: Similarity and difference between carbon and nitrogen

Kishan Habib; Motomichi Koyama; Eisaku Sakurada; Nobuyuki Yoshimura; Tatsuo Yokoi; Kohsaku Ushioda; Kaneaki Tsuzaki; Hiroshi Noguchi

doi:10.2355/isijinternational.ISIJINT-2018-535

Fatigue behavior in an Fe-N binary ferritic steel: Similarity and difference between carbon and nitrogen

Kishan Habib, Motomichi Koyama, Eisaku Sakurada, Nobuyuki Yoshimura, Tatsuo Yokoi, Kohsaku Ushioda, Kaneaki Tsuzaki, Hiroshi Noguchi

IMR - Materials Design Division

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

3 Citations (Scopus)

Abstract

Fatigue crack initiation and propagation behavior of a water-quenched fully ferritic nitrogen steel were investigated by means of tension-compression fatigue tests. The Fe-0.011 mass% N steel showed no serrated flow associated with dynamic strain aging, and showed a fatigue limit of 150 MPa alongside a non-propagating fatigue crack. The major mode of crack initiation was at the grain boundaries, and the cracks propagated along the grain boundaries and interiors at and above the fatigue limit. The Fe-N steel did not exhibit a significant level of coaxing effect. The results were compared with our previous findings in Fe-0.006 and 0.017C steels, and the similarity and difference were discussed.

Original language	English
Pages (from-to)	186-191
Number of pages	6
Journal	ISIJ International
Volume	59
DOIs	https://doi.org/10.2355/isijinternational.ISIJINT-2018-535
Publication status	Published - 2019 Jan

Keywords

Intergranular crack initiation
Nitrogen steel
Non-propagating fatigue crack
Small fatigue crack

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10.2355/isijinternational.ISIJINT-2018-535

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title = "Fatigue behavior in an Fe-N binary ferritic steel: Similarity and difference between carbon and nitrogen",

abstract = "Fatigue crack initiation and propagation behavior of a water-quenched fully ferritic nitrogen steel were investigated by means of tension-compression fatigue tests. The Fe-0.011 mass% N steel showed no serrated flow associated with dynamic strain aging, and showed a fatigue limit of 150 MPa alongside a non-propagating fatigue crack. The major mode of crack initiation was at the grain boundaries, and the cracks propagated along the grain boundaries and interiors at and above the fatigue limit. The Fe-N steel did not exhibit a significant level of coaxing effect. The results were compared with our previous findings in Fe-0.006 and 0.017C steels, and the similarity and difference were discussed.",

keywords = "Intergranular crack initiation, Nitrogen steel, Non-propagating fatigue crack, Small fatigue crack",

author = "Kishan Habib and Motomichi Koyama and Eisaku Sakurada and Nobuyuki Yoshimura and Tatsuo Yokoi and Kohsaku Ushioda and Kaneaki Tsuzaki and Hiroshi Noguchi",

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T1 - Fatigue behavior in an Fe-N binary ferritic steel

T2 - Similarity and difference between carbon and nitrogen

AU - Habib, Kishan

AU - Koyama, Motomichi

AU - Sakurada, Eisaku

AU - Yoshimura, Nobuyuki

AU - Yokoi, Tatsuo

AU - Ushioda, Kohsaku

AU - Tsuzaki, Kaneaki

AU - Noguchi, Hiroshi

PY - 2019/1

Y1 - 2019/1

N2 - Fatigue crack initiation and propagation behavior of a water-quenched fully ferritic nitrogen steel were investigated by means of tension-compression fatigue tests. The Fe-0.011 mass% N steel showed no serrated flow associated with dynamic strain aging, and showed a fatigue limit of 150 MPa alongside a non-propagating fatigue crack. The major mode of crack initiation was at the grain boundaries, and the cracks propagated along the grain boundaries and interiors at and above the fatigue limit. The Fe-N steel did not exhibit a significant level of coaxing effect. The results were compared with our previous findings in Fe-0.006 and 0.017C steels, and the similarity and difference were discussed.

AB - Fatigue crack initiation and propagation behavior of a water-quenched fully ferritic nitrogen steel were investigated by means of tension-compression fatigue tests. The Fe-0.011 mass% N steel showed no serrated flow associated with dynamic strain aging, and showed a fatigue limit of 150 MPa alongside a non-propagating fatigue crack. The major mode of crack initiation was at the grain boundaries, and the cracks propagated along the grain boundaries and interiors at and above the fatigue limit. The Fe-N steel did not exhibit a significant level of coaxing effect. The results were compared with our previous findings in Fe-0.006 and 0.017C steels, and the similarity and difference were discussed.

KW - Intergranular crack initiation

KW - Nitrogen steel

KW - Non-propagating fatigue crack

KW - Small fatigue crack

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Fatigue behavior in an Fe-N binary ferritic steel: Similarity and difference between carbon and nitrogen

Abstract

Keywords

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