| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Novel Twinning in Shock Loaded Additive Metastable Ti5553 |
| Author(s) |
Tim Ruggles, Josh Kacher, Paul Kotula, Brittany Branch, Paul Specht |
| On-Site Speaker (Planned) |
Tim Ruggles |
| Abstract Scope |
This work documents a new twinning mode in a β titanium alloy subjected to shock loading. The material was additively manufactured Ti5553 in the as-built condition, resulting in a metastable β microstructure. It was loaded in a gas-gun with a sapphire impactor to create a peak load of 2.1 GPa. Significant spall nucleated in the test specimen, but it remained intact for postmortem characterization. Twinning was found near the spall plane, but not the {332}<113> twinning mode typical of metastable β titanium or on the {112}<111> twinning that is typical of other BCC materials. This novel twin is investigated using electron backscatter diffraction (EBSD) analysis and transmission electron microscopy. The misorientation relationship is approximately a 20⁰ about the <110> axis and the twin is believed to be {811}<441>, an unreported twinning mode. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, |