Fatigue strength of nitrided high-strength titanium alloy

Tatsuro Morita; Syunsuke Fuchikawa; Jun Komotori; Masao Shimizu; Kuninori Minakawa; Kazuhiro Kawasaki

doi:10.1299/kikaia.67.719

Fatigue strength of nitrided high-strength titanium alloy

Tatsuro Morita, Syunsuke Fuchikawa, Jun Komotori, Masao Shimizu, Kuninori Minakawa, Kazuhiro Kawasaki

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

9 Citations (Scopus)

Abstract

This study is conducted to clarify the relationship between the fatigue strength of nitrided titanium and that of the substrate. The result shows that the fatigue strength of nitrided pure titanium is improved by the increase in the fatigue strength of its substrate. It can be considered that this improvement is caused by the reduction in the magnitude of the stress field which is generated in the compound-layer by the slip of the substrate. However, the above improvement is limited in case of nitrided titanium alloys which have high strength such as nitrided Ti-6 Al-4 V and SP-700 alloys. That is because the compound-layer is subjected to the additional intensive tensile stress induced by the difference of Young's moduli between the layer and the substrate.

Original language	English
Pages (from-to)	719-725
Number of pages	7
Journal	Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	67
Issue number	656
DOIs	https://doi.org/10.1299/kikaia.67.719
Publication status	Published - 2001
Externally published	Yes

Keywords

Compound-layer
Fatigue
Fatigue strength
Hardness
Nitriding
Nonferrous metal
Pure titanium
Residual stress
SP-700 alloy
Ti-6Al-4 V alloy

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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Fatigue strength of nitrided high-strength titanium alloy. / Morita, Tatsuro; Fuchikawa, Syunsuke; Komotori, Jun; Shimizu, Masao; Minakawa, Kuninori; Kawasaki, Kazuhiro.

In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 67, No. 656, 2001, p. 719-725.

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

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abstract = "This study is conducted to clarify the relationship between the fatigue strength of nitrided titanium and that of the substrate. The result shows that the fatigue strength of nitrided pure titanium is improved by the increase in the fatigue strength of its substrate. It can be considered that this improvement is caused by the reduction in the magnitude of the stress field which is generated in the compound-layer by the slip of the substrate. However, the above improvement is limited in case of nitrided titanium alloys which have high strength such as nitrided Ti-6 Al-4 V and SP-700 alloys. That is because the compound-layer is subjected to the additional intensive tensile stress induced by the difference of Young's moduli between the layer and the substrate.",

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AU - Minakawa, Kuninori

AU - Kawasaki, Kazuhiro

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