Effect of nonmetallic inclusions on fatigue properties of superelastic ti-ni fine wire

Fumiyoshi Yamashita, Yasunori Ide, Suguru Kato, Kyosuke Ueda, Takayuki Narushima, Sumio Kise, Kouji Ishikawa, Minoru Nishida

Research output: Contribution to journalArticle

Abstract

This study investigated the effects of the types and length of nonmetallic inclusions on fatigue properties in rotating bending fatigue testing of Ti-Ni alloy fine wire. It was fabricated to include titanium carbides Ti(C,O) and titanium oxides Ti4 Ni2 Ox as either single phases or a mixture of both phases as nonmetallic inclusions in Ti-Ni alloy. The fatigue strength of Ti-Ni alloy depended on the number of nonmetallic inclusions of a length of ≥2 µm. Compared with Ti(C,O), Ti4 Ni2 Ox is coarse. It also exhibited a trend of readily forming particles and void assemblies, which are a defect morphology that originates from nonmetallic inclusions and readily act as crack origins of fatigue fractures.

Original languageEnglish
Article number999
JournalMetals
Volume9
Issue number9
DOIs
Publication statusPublished - Sep 2019

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Fatigue of materials
Wire
Titanium carbide
Fatigue testing
Titanium oxides
Cracks
Defects
titanium nickelide
Fatigue strength
titanium dioxide
titanium carbide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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Effect of nonmetallic inclusions on fatigue properties of superelastic ti-ni fine wire. / Yamashita, Fumiyoshi; Ide, Yasunori; Kato, Suguru; Ueda, Kyosuke; Narushima, Takayuki; Kise, Sumio; Ishikawa, Kouji; Nishida, Minoru.

In: Metals, Vol. 9, No. 9, 999, 09.2019.

Research output: Contribution to journalArticle

Yamashita, F, Ide, Y, Kato, S, Ueda, K, Narushima, T, Kise, S, Ishikawa, K & Nishida, M 2019, 'Effect of nonmetallic inclusions on fatigue properties of superelastic ti-ni fine wire', Metals, vol. 9, no. 9, 999. https://doi.org/10.3390/met9090999
Yamashita F, Ide Y, Kato S, Ueda K, Narushima T, Kise S et al. Effect of nonmetallic inclusions on fatigue properties of superelastic ti-ni fine wire. Metals. 2019 Sep;9(9). 999. https://doi.org/10.3390/met9090999
Yamashita, Fumiyoshi ; Ide, Yasunori ; Kato, Suguru ; Ueda, Kyosuke ; Narushima, Takayuki ; Kise, Sumio ; Ishikawa, Kouji ; Nishida, Minoru. / Effect of nonmetallic inclusions on fatigue properties of superelastic ti-ni fine wire. In: Metals. 2019 ; Vol. 9, No. 9.
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