| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Effect of Trace Elements for Hydrogen Ingress and Hydride Formation in Commercially Pure Titanium |
| Author(s) |
Stoichko Antonov, Qing Tan, Wei Chen, Baptiste Gault |
| On-Site Speaker (Planned) |
Stoichko Antonov |
| Abstract Scope |
Commercially pure alpha-titanium is highly desirable for various applications as it exhibits excellent corrosion resistance. However, titanium has a strong affinity for hydrogen, which renders it susceptible to failures caused by stress corrosion cracking or hydrogen embrittlement, primarily attributed to the formation of hydrides. In this study, advanced characterization techniques and computational models were employed to uncover some of the mechanisms related to hydrogen ingress and hydride formation in pure titanium. Cryogenic sample preparation, along with focused ion beam and atom probe tomography, was utilized to analyze the behavior of hydrogen and trace elements in a commercially pure titanium sample. The study revealed that the presence of beta-stabilizing elements, particularly iron (Fe), can induce the formation of small beta-phase precipitates, which are doorways for hydrogen ingress and promote the formation of hydrides at the alpha/beta interfaces. Additionally, alloying elements like Pd play a significant role in surface reactions involving H. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Phase Transformations |