About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
Presentation Title |
Modelling the Interactions of Zirconium Hydrides |
Author(s) |
Alireza Tondro, Brooke Bidyk, Ivan Ho, Hamidreza Abdolvand |
On-Site Speaker (Planned) |
Hamidreza Abdolvand |
Abstract Scope |
Hydrogen embrittlement is one of the major concerns in zirconium alloys. Formation of zirconium hydrides significantly accelerates the degradation of zirconium alloys used in the core of nuclear reactors. Zirconium hydrides usually form in different directions and configurations. This work studies the development of stress fields due to the interaction of hydrides and their subsequent effects on redistribution of hydrogen atoms. The effects of hydride distance for different hydride configurations are investigated in a CANDU pressure tube using a coupled diffusion-crystal plasticity finite element approach. It is shown that, due to alignment of growth directions of hydrides, stress fields in the vicinity of two parallel hydrides interact more significantly compared to those of perpendicular hydrides. Also, the effects of hydride length and width are studied where it is shown that hydrides with a width of 1 μm propagate faster than those having lower and higher widths. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Other, Other |