| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Investigating the Anisotropic Effect of Soluble Hydrogen on Plasticity in Unalloyed Uranium |
| Author(s) |
Mary O'Brien, Rose Bloom, Eric Tegtmeier, Daniel Savage, Bjorn Clausen, Jason Cooley, Samantha Lawrence |
| On-Site Speaker (Planned) |
Mary O'Brien |
| Abstract Scope |
Hydrogen embrittlement is a long-standing metallurgical challenge observed in numerous metallic systems, including uranium. Alpha-uranium has a low symmetry (orthorhombic) crystal structure that accommodates strain by mechanisms limited by crystallography or temperature. To examine the effect of hydrogen on plasticity, compression test were conducted with the loading axis parallel to either the through thickness (TT) direction or within the rolling plane (RP), which exhibit different crystallographic textures and primary deformation mechanisms. Pre-charging with hydrogen did not significantly alter the macroscopic stress-strain response of samples with RP texture but did increase strength of samples with TT texture. Characterization by electron backscatter diffraction has also revealed a significant different in twinning behavior in samples charged with hydrogen. Further, analysis of stress relaxation tests along the TT direction suggest hydrogen could affect deformation substructure formation and subsequent resistance to defect motion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, Mechanical Properties |