Biaxial creep of textured zircaloy I: Experimental and phenomenological descriptions
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Self-compensation in creep of pressurized cladding tubes: From self-limitation in dry storage to self-acceleration in burst tests
2023, Nuclear Engineering and DesignImpact of point defects on the creep behavior of MgY Polycrystal:A molecular dynamics study
2023, Materials LettersCitation Excerpt :Diffusion and dislocation creep have also been discovered to have a major impact on any material's creep mechanism in a range of creep circumstances[3,4]. Grain boundary sliding, grain rotation, and grain boundary sliding all play a role in the plastic deformation regime of ultrafine nanocrystals during creep characterization[5,6]. Gowthaman eta al. has confirmed that the points defects have offered a moderate impact on the material features[7].
Kinematic hardening in creep of Zircaloy
2016, Journal of Nuclear MaterialsCitation Excerpt :The evolution of internal stresses in plastically deforming Zircaloy were confirmed experimentally by in situ neutron diffraction measurements [7]. A different approach has been pursued in a wide class of studies focused on cladding creep behavior with practical applications in mind [12–20]. The proposed models describe the secondary (steady state) and primary (transient) creep strains as additive contributions.
Dislocation mechanisms in a zirconium alloy in the high-temperature regime: An in situ TEM investigation
2015, Acta MaterialiaCitation Excerpt :The reason for this unsatisfying situation is obviously that the dislocation mechanisms likely to occur above room temperature are not sufficiently understood. Different interpretations found in the literature are all based on the analysis of the temperature dependence (activation energy), stress dependence (activation volume, power-law exponent) of the deformation rate and post-mortem TEM observations [1–21]. The temperature dependence will not be discussed here.
Biaxial creep deformation behavior of Fe-14Cr-15Ni-Ti modified austenitic stainless steel fuel cladding tube for sodium cooled fast reactor
2014, Nuclear Engineering and DesignCitation Excerpt :Hexagonal close packed materials such as zircaloys used in thermal reactors are known to exhibit anisotropy in the creep properties i.e. creep strength is different in the hoop and axial directions of the internally pressurized tube, since they develop preferred orientations or texture during the fabrication process. Several studies have been reported in the literature on the biaxial creep deformation behavior of zircaloys [4–10], stainless steels [11] and titanium alloys [12]. Face centered cubic materials such as austenitic stainless steels in annealed condition are not expected to show anisotropy in the mechanical properties.
Creep deformation of materials in light water reactors (LWRs)
2013, Materials Ageing and Degradation in Light Water Reactors: Mechanisms and Management