About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
Multiscale deformation study of titanium at cryogenic temperature |
| Author(s) |
Tea-Sung Jun, Min-Su Lee, Nicol`o Maria della Ventura, Amit Sharma, Chunhua Tian, Xavier Maeder |
| On-Site Speaker (Planned) |
Tea-Sung Jun |
| Abstract Scope |
The anisotropic deformation characteristics of titanium are altered at cryogenic temperatures, which further complicates the understanding of its deformation behaviour under such conditions. This study therefore aims to reveal the underlying deformation mechanisms of titanium at cryogenic temperature. The rolled pure Ti sheet was investigated with respect to the crystallographic texture, temperature and strain rate through in-situ DIC-based tensile test, neutron diffraction measurement, micropillar compression together with post-mortem microstructure characterisation. We observed higher strength and better ductility with lowering temperature and strain rate, where the strain-hardening is enhanced by the high dislocation accumulation and twin density at cryogenic temperature, thereby providing a resistance to plastic instability, which enables to retard the premature failure. The findings in this study provide insights into the fundamental understanding of cryogenic deformation mechanisms and design of materials for cryogenic applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Other |