| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1618862 | Journal of Alloys and Compounds | 2011 | 6 Pages |
The present research aims to understand the recovery stress of NiTi wires generated during heating and isothermal holding under constrained condition. Both pre-strain and isothermal holding temperature have significant effects on the evolution of recovery stress during heating and isothermal holding. In general, increasing isothermal holding temperature and/or pre-strain causes an increase of recovery stress reduction or relaxation. This effect can be attributed to different dislocation densities and mobility of dislocations generated in those conditions.
Research highlights▶ The generation and evolution of recovery stress in annealed NiTi wires depend on the pre-strain level and isothermal holding temperature. ▶ Increasing isothermal holding temperature and/or pre-strain causes the increase of recovery stress reduction. ▶ This effect can be attributed to a different dislocation density and mobility of dislocations generated in different conditions.
