Co-extrusion of Zircaloy-2 and Zr-Sn alloy for double clad tube manufacturing: Numerical simulation and experimental validation

Jha, S.K.; Dixit, Saurabh; Chethan, K N; Kumar, Vijay; Srivastava, D.

doi:10.1016/j.jmapro.2019.01.048

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…Furthermore, the total elongation of the multilayered structures was lower than that of the single co-extruded plates and was attributed to the increased fraction of intermetallic compounds. The bimetallic billet assembly for conventional extrusion is typically achieved through compound casting, where the core is cast first then the shell [7,8] or is fusion-welded along the core-shell interface [9] to promote good metallurgical bonding in the cladded tubes. For instance, Chen et al [7] fabricated bimetallic billets through the compound-casting process using 7075 Al as the core and 6060 as the cladding, then completed hot co-extrusion of the cast billets.…”

Section: Introductionmentioning

confidence: 99%

“…The extrudates exhibited a defect-free, metallurgically bonded interface between the core and cladding. The importance of fusion-welded bimetallic billets can be noted through the co-extrusion of Zircaloy-2 and Zr-Sn carried out by Jha et al [9]. The absence of welding and degassing for the bimetallic billets led to the formation of voids along the core-cladding interface, while adding these steps during billet preparation led to a defectfree interface.…”

Section: Introductionmentioning

confidence: 99%

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Co-Extrusion of Dissimilar Aluminum Alloys via Shear-Assisted Processing and Extrusion

Komarasamy,

Li,

Taysom

et al. 2023

Coatings

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Bimetallic tubes are used when a component requires more than one performance requirement, for instance, strength/creep resistance and oxidation/corrosion resistance. Shear-assisted processing and extrusion (ShAPE) can be used to fabricate extrudates that are comparable or superior in performance relative to conventionally manufactured extrudates. For the first time, ShAPE has been successfully employed in producing bimetallic Al tubing consisting of 6061 and 7075 Al alloys. Both light and electron microscopy techniques were used to investigate the integrity of the tubes, especially the interface between the core and cladding of the bimetallic tubes. Void-free bimetallic tubes were produced using ShAPE. Quantification of tube integrity was carried out with tensile testing under as-extruded and post-aged conditions. All the bimetallic tubes in the as-extruded samples exhibited uniform elongation above 5% with good tensile strength. Key insights such as material flow during bimetallic tube extrusion were obtained from the characterization of remnant billet and simulation results from a smoothed particle hydrodynamics model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Co-Extrusion of Dissimilar Aluminum Alloys via Shear-Assisted Processing and Extrusion

Komarasamy,

Li,

Taysom

et al. 2023

Coatings

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“…Zr-2 (98% Zr, 1.6% Sn, 0.15% Fe, 0.1% Cr, 0.05% Ni) (Nishino et al, 1996;Masterson, 2017), SiC (48.3% Si, 51.7% C) (Sauder et al, 2013), and VC (80.9% V, 19.1% C) were developed as fuel cladding in LWRs to solve this undesired situation in reactor life and energy production. Zr-2, SiC, and VC have outstanding properties of not spreading cracks throughout the cladding, irradiation stability, low stress levels, the ability to maintain their mechanical properties and chemical inactivity at high temperatures, and resistance to vapor oxidation (Williams et al, 1996;Edsinger and Murty, 2001;Korkut et al, 2016;Jha et al, 2019;Singh et al, 2019). In nuclear reactors, a low thermal neutron absorption cross-section is preferred to increase energy production.…”

Section: Introductionmentioning

confidence: 99%

Neutronic Calculations for Certain Americium Mixed Fuels and Clads in a Boiling Water Reactor

Düz

2021

Front. Energy Res.

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In this study, a Boiling Water Reactor (BWR) design was made using the Monte Carlo (MCNPX) method. The reactor core in the designed BWR system was divided into an 8 × 8 square lattice with a constant pitch of 30.48 cm. In this study, americium (Am), which is found in the minor actinidine (MA) of spent nuclear fuel known as nuclear waste from existing reactors, was used as fuel with the addition of oxygen and fluorine. In this study, AmO2 and AmF3 fuels at the rate of 0.02–0.1% were used as Americium Mixed Fuels, and Zircaloy-2 (Zr-2), SiC, and VC were used as clad. Neutronic calculations for certain Americium Mixed Fuels and clads were compared in the designed BWR system. In the BWR system designed in the study; keff, neutron flux, fission energy, heating, and depleted Am were calculated. The three-dimensional (3-D) modeling of the designed BWR system was performed by using MCNPX-2.7.0 Monte Carlo method and the ENDF/B-VII.0 nuclear data library.

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“…Zirconium alloy extrusion methods are widely used in the production of pipes and other components needed in nuclear power, but in this case, the starting alloys for the commercial extrusion process were castings. For example, the cladding tubes are fabricated from tube-reduced extrusions (TREX) using the Pilger process [22,23]. The main problem impeding the prepared zirconium mixtures and carrying out the extrusion process is the flammability of zirconium powders [24].…”

Section: Introductionmentioning

confidence: 99%

The Extrusion and SPS of Zirconium–Copper Powders and Studies of Selected Mechanical Properties

et al. 2021

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Zr-2.5Cu and Zr-10Cu powder mixtures were consolidated in the extrusion process and using the spark plasma sintering technique. In these studies, material tests were carried out in the fields of phase composition, microstructure, hardness and tensile strength for Zr-Cu materials at room temperature (RT) and 400 °C. Fractography analysis of materials at room temperature and 400 °C was carried out. The research took into account the anisotropy of the materials obtained in the extrusion process. For the nonequilibrium SPS process, ZrCu2 and Cu10Zr7 intermetallic compounds formed in the material at sintering temperature. Extruded materials were composed mainly of α-Zr and ZrCu2. The presence of intermetallic compounds affected the reduction in the strength properties of the tested materials. The highest strength value of 205 MPa was obtained for the extruded Zr-2.5Cu, for which the samples were cut in the direction of extrusion. For materials with 10 wt.% copper, more participation of the intermetallic phase was formed, which lowered the mechanical properties of the obtained materials. In addition to brittle intermetallic phases, the materials were characterized by residual porosity, which also reduced the strength properties.

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Co-extrusion of Zircaloy-2 and Zr-Sn alloy for double clad tube manufacturing: Numerical simulation and experimental validation

Cited by 7 publications

References 12 publications

Co-Extrusion of Dissimilar Aluminum Alloys via Shear-Assisted Processing and Extrusion

Co-Extrusion of Dissimilar Aluminum Alloys via Shear-Assisted Processing and Extrusion

Neutronic Calculations for Certain Americium Mixed Fuels and Clads in a Boiling Water Reactor

The Extrusion and SPS of Zirconium–Copper Powders and Studies of Selected Mechanical Properties

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