Abstract
The deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn (wt%) alloy subjected to different thermo-mechanical treatments was discussed by the combining results from transmission electron microscope, tensile test and in-situ synchrotron X-ray diffraction. Visible "double yielding" behavior, which is characterized by the presence of stress-plateau, was observed in the solution treated specimen. Upon a cold rolling treatment, the Ti-25Nb-2Mo-4Sn alloy performs nonlinear deformation because of the combined effects of elastic deformation and stress-induced α″ martensitic transformation. After the subsequent annealing, the β phase is completely stabilized and no stress-induced martensitic transformation takes place on loading due to the inhibitory effect of grain boundaries and dislocations on martensitic transformation. As a result, the annealed specimen exhibits linear elastic deformation.
| Original language | English |
|---|---|
| Pages (from-to) | 26-32 |
| Number of pages | 7 |
| Journal | Journal of the Mechanical Behavior of Biomedical Materials |
| Volume | 38 |
| DOIs | |
| State | Published - Oct 2014 |
Keywords
- Deformation behavior
- In-situ synchrotron X-ray diffraction
- Martensitic transformation
- Metastable β Ti alloy
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