About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
|
Symposium
|
6th International Congress on 3D Materials Science (3DMS 2022)
|
Presentation Title |
Investigation of Threshold Stress Level of Radially Reprecipitated Hydrides: A Phase-field Approach |
Author(s) |
Wooseob Shin, Kunok Chang |
On-Site Speaker (Planned) |
Wooseob Shin |
Abstract Scope |
Dry storage of the spent nuclear fuel (SNF) is an inevitable option in terms of ease and cost of SNF management. A Zr-based cladding has a strong tendency to absorb hydrogen and hydride precipitates as the cladding temperature during dry storage. The hydride in Zr-based cladding seriously degrade the mechanical integrity of the cladding, especially when it is radially oriented. We applied KKS(Kim-Kim-Suzuki) multiphase field model with elasticity to evaluate threshold applied stress level to radially precipitate δ-hydride on α-Zr affected by the temperature and dissolved hydrogen concentration. And we exhibited crystalline anisotropic interfacial energy to indicate when δ-hydride is formed in the cladding as hexagonal shape. We utilized MOOSE multiphysics framework to simulate the behavior of the hydride on the cladding materials quantitatively. Our obtained threshold applied stress level can be a meaningful guide to find safe and economic environments of the dry stored SNF. |
Proceedings Inclusion? |
Definite: Other |