Enhancement of Fatigue Life in TiNi Shape Memory Alloy by Ultrasonic Shot Peening

被引：13
|
作者：
Takeda, Kohei [1 ]
Matsui, Ryosuke [1 ]
Tobushi, Hisaaki [1 ]
Homma, Shinichi [2 ]
Hattori, Kanehisa [3 ]
机构：
[1] Aichi Inst Technol, Dept Mech Engn, Toyota 4700392, Japan
[2] Nippon Trex Co Ltd, Toyokawa 4410193, Japan
[3] Toyo Seiko Co Ltd, Yatomi 4901412, Japan
来源：
MATERIALS TRANSACTIONS | 2015年 / 56卷 / 04期
关键词：
shape memory alloy; titanium-nickel alloy; superelasticity; ultrasonic shot peening; fatigue; bending; DEFORMATION; WIRES;
D O I：
10.2320/matertrans.MBW201408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fatigue property of shape memory alloy (SMA) is one of the most important subjects in view of evaluating functional characteristics of SMA elements. In the present study, ultrasonic shot peening (USP) was applied to induce compressive residual stress on the surface layer of TiNi SMA tape and the influence of USP on the bending fatigue life was investigated. The fatigue life of USP-treated tape is longer than that of the as-received tape. The fatigue life of the tape USP-treated with high coverage is longer than that with low coverage. The fatigue life of the USP-treated tape increases in proportion to the hardness on the surface of the tape.
引用
收藏
页码：513 / 518
页数：6
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