| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Effect of the Inner Liner on Radial Delayed Hydride Cracking |
| Author(s) |
Aaron Colldeweih, Pavel Trtik, Francesco Fagnoni, Johannes Bertsch |
| On-Site Speaker (Planned) |
Aaron Colldeweih |
| Abstract Scope |
This work investigates radial DHC in unirradiated Zircaloy-2 cladding material with an inner liner. DHC is induced through a three-point bending test from the outside-in direction. Post DHC examinations were conducted with light optical microscopy (LOM), scanning electron microscopy (SEM), and high-resolution neutron radiography. Metallography analysis has characterized the hydrogen precipitation near and around the crack tip, as well as at the liner/matrix interface in front of the crack tip. Fractography analysis was employed to quantify the crack velocities and determine stress intensity factors in combination with finite element modeling (FEM). Through FEM, stress fields as well as stress intensity factors expected at various stages of crack propagation are calculated. At the SINQ spallation neutron source of the Paul Scherrer Institut (PSI), using the Neutron Microscope detector, radiography provided quantitative information about the hydrogen concentration distribution throughout the sample, specifically at and between the liner/matrix interface and crack tip. |
| Proceedings Inclusion? |
Undecided |