| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Beta Ti Alloys with Increased Oxygen Content and TRIP/TWIP Effect |
| Author(s) |
Josef Strasky, Dalibor Preisler |
| On-Site Speaker (Planned) |
Josef Strasky |
| Abstract Scope |
Alloys with TRIP of TWIP effect exhibit high ductility and very pronounced deformation strengthening, but their yield point is low. Increased concentration of oxygen causes interstitial strengthening in beta Ti alloys.
The aim of the research is to develop an alloy with enhanced strength and TRIP/TWIP effect. Various Ti-Nb-Zr-O based compositions have been prepared by compaction and homogenization using SPS. Individual compositions have been studied by scanning electron microscopy and microhardness mapping. Compression tests were performed with simultaneous in-situ measurement of acoustic emission and digital image correlation (DIC). The deformed microstructures were analyzed by electron back-scatter diffraction (EBSD). Stress induced martensite and {332}<113> twinning was found in Ti-Nb based alloy with 0.5 wt% of oxygen and 7 wt% of Zr. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Phase Transformations, Mechanical Properties |