Mechanical behavior of recrystallized Zircaloy-4 under monotonic loading at room temperature: Tests and simplified anisotropic modeling

Mozzani, N.; Auzoux, Quentin; Boulch, D. Le; Andrieu, Éric; Blanc, Christine; Scott, Colin; Barnel, Nathalie

doi:10.1016/j.jnucmat.2014.01.003

Cited by 11 publications

(2 citation statements)

References 24 publications

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“…These values contained a contribution from the nonirradiated and irradiated regions of the tensile specimen; however, the majority (80%) of the specimens was not irradiated. Therefore, the values measured here are similar to those measured by Mozzani et al 35 in nonirradiated Zircaloy-4 and Xu et al in nonirradiated Zircaloy-2. 36 Figure 2B also shows different strain-hardening behavior in the samples, with a larger strainhardening rate and lower yield stress in RD.…”

Section: Macroscopic Deformation Behaviorsupporting

confidence: 92%

The Effect of Loading Direction on Slip and Twinning in an Irradiated Zirconium Alloy

Thomas

Lunt

Atkinson

et al. 2021

Zirconium in the Nuclear Industry: 19th International Symposium

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In this study, deformation experiments together with high-resolution digital image correlation were used to quantify the effect of proton irradiation on strain localization in Zircaloy-4 loaded along the rolling and transverse directions. Significant increases in strain heterogeneity were measured in the irradiated material compared to the nonirradiated material. This was a result of confinement of slip to channels in the irradiated material, which contain high effective shear strain values, with almost no strain in the regions between channels. The active slip systems in the material were also determined by comparing experimental slip trace angles from high-resolution digital image correlation with theoretical slip trace angles determined using grain orientation from electron backscatter diffraction. An increased amount of pyramidal and wavy basal slip, as well as tension twinning, were observed in the sample loaded along the transverse direction, compared to the sample loaded along the rolling Manuscript

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Section: Macroscopic Deformation Behaviorsupporting

confidence: 92%

The Effect of Loading Direction on Slip and Twinning in an Irradiated Zirconium Alloy

Thomas

Lunt

Atkinson

et al. 2021

Zirconium in the Nuclear Industry: 19th International Symposium

View full text Add to dashboard Cite

show abstract

“…The average grain size, determined along any line at right angles to the surface of the finished product, should not exceed 15 micrometers, and there should not be grains larger than 35 micrometers, that is, the average grain size should be the average distance between grain boundaries [ 13 , 14 ]. Available industrial technologies for manufacturing products from zirconium alloys provide obtaining equiaxed grains with a size of 1–5 μm [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Radial-Shear Rolling Deformation Processing on the Structure and Properties of Zr-2.5Nb Alloy

et al. 2023

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The rheological properties of the Zr-2.5Nb alloy by the strain rate range of 0.5–15 s−1 and by the temperature range of 20–770 °C was studied. The dilatometric method for phase states temperature ranges was experimentally determined. A material properties database for computer FEM simulation regards the indicated temperature-velocity ranges were created. Using this database and DEFORM-3D FEM-softpack, the radial shear rolling complex process numerical simulation was carried out. The contributed conditions for the ultrafine-grained state alloy structure refinement were determined. Based on the simulation results, a full-scale experiment of Zr-2.5Nb rod rolling a on a radial-shear rolling mill RSP-14/40 was carried out. It takes in seven passes from a diameter of 37–20 mm with a total diameter reduction ε = 85%. According to this case simulation data, the total equivalent strain in the most processed peripheral zone 27.5 mm/mm was reached. Due to the complex vortex metal flow, the equivalent strain over the section distribution was uneven with a gradient reducing towards the axial zone. This fact should have a deep effect on the structure change. Changes and structure gradient by sample section EBSD mapping with 2 mm resolution were studied. The microhardness section gradient by the HV 0.5 method was also studied. The axial and central zones of the sample by the TEM method were studied. The rod section structure has an expressed gradient from the formed equiaxed ultrafine-grained (UFG) structure on a few outer millimeters of the peripheral section to the elongated rolling texture in the center of the bar. The work shows the possibility of processing with the gradient structure obtaining and enhanced properties for the Zr-2.5Nb alloy, and a database for this alloy FEM numerical simulations are also presents.

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Effect of Pre-straining and Subsequent Annealing on Microstructure and Mechanical Property of Zr–Sn–Nb–Fe Zirconium Alloy

et al. 2021

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Mechanical behavior of recrystallized Zircaloy-4 under monotonic loading at room temperature: Tests and simplified anisotropic modeling

Cited by 11 publications

References 24 publications

The Effect of Loading Direction on Slip and Twinning in an Irradiated Zirconium Alloy

The Effect of Loading Direction on Slip and Twinning in an Irradiated Zirconium Alloy

The Effect of Radial-Shear Rolling Deformation Processing on the Structure and Properties of Zr-2.5Nb Alloy

Effect of Pre-straining and Subsequent Annealing on Microstructure and Mechanical Property of Zr–Sn–Nb–Fe Zirconium Alloy

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