About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Unveiling N-Induced Deformation Heterogeneity in Titanium: Insights from High-Resolution Digital Image Correlation and In-Situ Synchrotron X-Ray Diffraction |
| Author(s) |
Wujun Yin, Si Gao, Myeong-heom Park, Jiyun Kang, Nobuhiro Tsuji |
| On-Site Speaker (Planned) |
Wujun Yin |
| Abstract Scope |
Solid solution strengthening by interstitial elements is among the most effective strategies for improving mechanical properties of structural alloys. However, the non-uniform distribution of interstitials between crystal lattice and grain boundaries introduces deformation heterogeneity, which remains scarcely quantified despite its critical role in governing plasticity and failure. In this study, we leverage high-resolution digital image correlation (HR-DIC) combined with in-situ synchrotron X-ray diffraction (SXRD) to directly resolve how interstitials contribute to heterogeneous deformation across multiple length scales. We examine a titanium doped with 0.3 wt% nitrogen (Ti-0.3N) as our model alloy, using pure Ti with a comparable grain size as a reference. The results reveal pronounced strain localization near grain boundaries of the Ti-0.3N alloy compared to pure Ti, driven by restricted slip transfer due to nitrogen segregation. These findings provide direct and quantitative insight into the role of interstitials in mediating deformation heterogeneity and inform future alloy design strategies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Mechanical Properties |