Abstract
The microstructures, phase transformations, mechanical properties and shape memory effect of Ti-xZr-10Nb-4Ta (x = 16, 18, 19 and 19.5 at. %) alloys were investigated. The X-ray diffraction and transmission electron microscopy results showed that the Ti-16Zr-10Nb-4Ta alloy is composed of single αʺ-martensite, while the others consisted of predominant orthorhombic αʺ-martensite phase and a small amount of the β phase. The reverse martensitic transformation starting temperature (As) was 477 K for the Ti-16Zr-10Nb-4Ta alloy and decreased non-linearly with increasing Zr content. The addition of Zr resulted in the appearance of the β phase, thus elevating the stress for martensite re-orientation. However, it weakened the plasticity and the shape memory effect. The highest shape memory strain and the largest tensile strain in Ti-16Zr-10Nb-4Ta alloy were found to be 4% and 16%, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 672-677 |
| Number of pages | 6 |
| Journal | Journal of Alloys and Compounds |
| Volume | 737 |
| DOIs | |
| State | Published - 15 Mar 2018 |
| Externally published | Yes |
Keywords
- Martensitic transformation
- Mechanical properties
- Shape memory alloy
- Ti-Zr
Fingerprint
Dive into the research topics of 'Effect of Zr on the martensitic transformation and the shape memory effect in Ti-Zr-Nb-Ta high-temperature shape memory alloys'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver