Effect of Nonmetallic Inclusions on Fatigue Properties of Superelastic Ti-Ni Fine Wire

被引：5

作者：

Yamashita, Fumiyoshi ^{[1
,2
]}

Ide, Yasunori ^{[1
]}

Kato, Suguru ^{[3
]}

Ueda, Kyosuke ^{[3
]}

Narushima, Takayuki ^{[3
]}

Kise, Sumio ^{[2
]}

Ishikawa, Kouji ^{[4
]}

Nishida, Minoru ^{[5
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Appl Sci Elect & Mat, Fukuoka, Fukuoka 8168580, Japan

[2] Furukawa Techno Mat Co Ltd, Special Met Div, Technol Dev Dept, Hiratsuka, Kanagawa 2540016, Japan

[3] Tohoku Univ, Dept Mat Proc, Sendai, Miyagi 9808579, Japan

[4] Furukawa Techno Mat Co Ltd, Special Met Div, Hiratsuka, Kanagawa 2540016, Japan

[5] Kyushu Univ, Fac Engn Sci, Dept Adv Mat Sci & Engn, Fukuoka, Fukuoka 8168580, Japan

来源：

METALS | 2019年 / 9卷 / 09期

关键词：

Ti-Ni alloy; nonmetallic inclusions; fatigue properties; particle and void assembly; SHAPE-MEMORY;

D O I：

10.3390/met9090999

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 Ti4Ni2Ox 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 mu m. Compared with Ti(C,O), Ti4Ni2Ox 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.

引用

页数：11

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