About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
Anisotropic Biaxial Creep Behavior of Textured Nb-modified Zircaloy Cladding |
Author(s) |
Mahmoud Y. Hawary, K. L. Murty |
On-Site Speaker (Planned) |
Mahmoud Y. Hawary |
Abstract Scope |
ZIRLOŽ, a niobium alloyed Zr-4, was developed to enhance the deformation and degradation characteristics of the radioactive nuclear fuel cladding tubes in light water reactors. These thin-walled tubes are used following cold work and stress relief. In this work, the effects of Nb addition to Zry-4 on anisotropic biaxial creep characteristics in the as-received (CWSR) and recrystallized (Rx) conditions have been evaluated. The crystallographic textures were evaluated using EBSD from which crystallite orientation distribution functions (CODF) were generated for quantitative description of the creep anisotropy based on crystal slip models. Biaxial creep tests were performed using internally pressurized tubing superimposed with axial load under varied hoop to axial stress ratios of 0 to 2. The anisotropy parameters (R and P) in Hill’s formulation for generalized stress for anisotropic materials are evaluated. In addition, the creep locus is derived at a constant energy of dissipation that deviated from isotropy. |
Proceedings Inclusion? |
Planned: |