| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1572493 | Materials Characterization | 2007 | 5 Pages |
Abstract
The influence of heat treatment on the rotating–bending fatigue of a laser-welded superelastic NiTi alloy wire was investigated. In comparison with the as-welded and annealed at 500 °C for 1 h specimens, the specimen annealed at 400 °C for 1 h shows the best fatigue resistance. The difference of fatigue life in the heat-treated materials is attributed to the different Ti3Ni4 precipitate size. Heat treatment to produce smaller coherent precipitates (10 nm) improves the fatigue resistance of the laser-welded NiTi alloy wire. When the Ti3Ni4 precipitates become coarse, the fatigue resistance decreases.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
X.J. Yan, D.Z. Yang, X.P. Liu,