About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Nuclear Materials and Fuels with Advanced X-ray and Neutron Techniques
|
| Presentation Title |
Characterization of Microstructure, Texture, And Residual Stress in a Neutron Irradiated CANDU Pressure Tube |
| Author(s) |
Abdulla Alawadi, Hamidreza Abdolvand, Michael Bach, Sterling St Lawrence |
| On-Site Speaker (Planned) |
Hamidreza Abdolvand |
| Abstract Scope |
In CANada Deterium Uranium (CANDU) nuclear reactors, pressure tubes are made of a Zr-2.5Nb alloy and are susceptible to the formation of brittle zirconium hydrides. The microstructure of the pressure tubes and the residual stresses that develop in the tubes can affect the hydrogen diffusion and hydrides formation. As such, understanding how the microstructure, texture, and residual stresses vary along the pressure tube is important. In this research, an extensive analysis of the microstructure and texture of three in-service neutron-irradiated pressure tube samples is conducted using EBSD. The results are subsequently compared to an unirradiated sample obtained from an offcut of the same tube. Furthermore, the measured grain maps are imported into the Abaqus FE solver to simulate the effects of thermal residual stresses that develop during the tubes manufacturing process. The effects of irradiation growth on the development of localized stresses are studied using crystal plasticity finite element modeling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Nuclear Materials, |