About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Room temperature cold creep of Ti studied by constant contact pressure nanoindentation |
| Author(s) |
Lizhong Lang, Yu Zou |
| On-Site Speaker (Planned) |
Lizhong Lang |
| Abstract Scope |
Titanium and its alloys exhibit abnormal creep rates at high stress and low temperature. This cold creep behavior is believed to be related to the high strain rate sensitivity of the basal a slip {0001} <11-20> of α-grains. However, acquiring direct evidence of orientation dependent cold creep is difficult, which requires many single crystal specimens. In this work, constant contact pressure (CCP) nanoindentation was applied to study the orientation dependency of pure titanium. This work reveals that materials have been work hardened before creep measurement takes place in nanoindentation. The cold creep behaviors of different orientations of grains appeared similar under nanoindentation creep, indicating that work hardening can suppress the orientation dependency of cold creep. A novel CCP protocol was also proposed and tested to probe the intrinsic orientation dependency of cold creep. Crystal plasticity finite element was applied to verify the findings. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, Modeling and Simulation |