| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Heterostructured and Gradient Materials (HGM VI): Principle, Processing and Properties
|
| Presentation Title |
Anomalous Improvement of Cryogenic Mechanical Properties in a Heterostructured Pure Titanium |
| Author(s) |
Wuli Su, Yuntian Zhu, Xiaolong Ma, Chongxiang Huang |
| On-Site Speaker (Planned) |
Xiaolong Ma |
| Abstract Scope |
The pursuit of strong and ductile structures for cryogenic applications has fueled a persistent interest in the microstructure design of metals and alloys. While heterostructure design has recently demonstrated efficacy in achieving superior strength-ductility combinations at room temperature, its potential remains less explored in the cryogenic regime. In this report, we unveil anomalously improved cryogenic mechanical properties of pure titanium with harmonic heterostructure that matches or surpasses those of commercial titanium alloys. We reveal that the superior performance of heterostructure at cryogenic temperature is fundamentally underpinned by the amplified inter-zone mechanical incompatibility and the suppression of dislocation cross-slip. The former promotes the generation of abundant geometrically necessary dislocations, and the latter optimally configures them. Collectively, these two factors culminate in the hetero-deformation-induced effect, delivering the anomalous improvement of cryogenic mechanical properties in titanium. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Process Technology, Mechanical Properties |