Fatigue strength of nitrided high-strength titanium alloy

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)719-725
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume67
Issue number656
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

High strength alloys
Titanium alloys
Substrates
Titanium
Tensile stress
Elastic moduli
Fatigue strength

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

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

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 journalArticle

Morita, Tatsuro ; Fuchikawa, Syunsuke ; Komotori, Jun ; Shimizu, Masao ; Minakawa, Kuninori ; Kawasaki, Kazuhiro. / Fatigue strength of nitrided high-strength titanium alloy. In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A. 2001 ; Vol. 67, No. 656. pp. 719-725.
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