| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Studying the localized deformation behavior of hydride containing Zircaloy-4 getter tubes for TPBAR applications |
| Author(s) |
Tanvi Ajantiwalay, Semanti Mukhopadhyay , Mayur Pole, Joshua Silverstein, Ewa Ronnebro, Arun Devaraj |
| On-Site Speaker (Planned) |
Tanvi Ajantiwalay |
| Abstract Scope |
One of the known issues with Zircaloy-4 used as fuel cladding or getters in TPBARs is the formation of hydrides which, is generally considered detrimental to mechanical properties. The degree of hydride embrittlement experienced by the accommodating Zr matrix is highly dependent on both the morphology and orientation of the hydrides. In this work, we introduced hydrides in Zr-4 getter tubes via gaseous permeation of deuterium (2H) to obtain a D/Zr = 0.60. Electron backscatter diffraction (EBSD) shows a heavily textured microstructure of the getter tubes and formation of continuous γ-hydrides. The site-specific mechanical properties of Zr-4 before and after deuterium charging were then studied using in situ nanoindentation and micro-pillar compression testing inside the Scanning Electron Microscope (SEM). A variation in hardness and modulus is observed at hydrides locations vs bulk Zr-4. Finally, the deformation behavior from compressed pillars is explored in detail using Transmission Electron Microscopy (TEM). |
| Proceedings Inclusion? |
Planned: |