Abstract
Stress-induced martensitic transformation of as-sputtered and post-annealed Ti50.1Ni40.8Cu9.1 thin films was investigated using in-situ synchrotron X-ray diffraction (S-XRD) technique. For the as-deposited film, in-situ S-XRD analysis showed a martensitic transformation from parent phase to martensite during initial loading, followed by reorientation of martensite variants via detwinning. This detwinning process induced a strong 〈0 2 0〉 fiber texture along the loading direction and a strong 〈0 0 2〉 fiber texture perpendicular to the loading direction. For the 650 °C annealed film, there is only elastic deformation, followed by a martensitic transformation during deformation.
Original language | English |
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Pages (from-to) | 3437-3440 |
Journal | Physica B: Condensed Matter |
Volume | 407 |
Issue number | 17 |
DOIs | |
Publication status | Published - Sept 2012 |
Keywords
- Shape memory
- Ti–Ni–Cu thin film
- stress-induced phase transformation
- detwinning
- synchrotron X-ray diffraction