| Autor: |
A. V. Korotitskiy, S. Yu. Makushev, N. N. Popov, D. V. Borovkov, S. D. Prokoshkin, V. Ya. Abramov, N. A. Polyakova, I. Yu. Khmelevskaya, N. M. Aleksandrova |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Materials Science and Engineering: A. :553-557 |
| ISSN: |
0921-5093 |
| DOI: |
10.1016/j.msea.2006.05.170 |
| Popis: |
The aim of the present work is the detailed investigation of the structure, martensitic transformations and functional properties of the wide-hysteresis Ti–Ni–Nb-based shape memory alloys intended for the thermomechanical coupling (TMC) development. The 45Ti–45Ni–10Nb and 42.5Ti–46.5Ni–8Nb–3Zr (at.%) alloys have been studied. Zr addition results in martensitic hysteresis widening that promotes an improvement of the material functional properties. High-temperature thermomechanical treatment (HTMT) is an effective method for the optimization of Ti–Ni–Nb-based shape memory alloys properties. HTMT increases recovery strain and shape recovery rate as well as provides a favorable effect on the recovery stress generation and relaxation. The alloys compositions and treatments which allow designing the room-temperature-stored TMCs for tubes or pipes joints, reliable within the temperature range above −60 °C and easily dismantled when cooling in liquid nitrogen, have been proposed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect