Article
Materials Science, Multidisciplinary
A. Bouayoune, R. Guillou, J. -l. Bechade, E. Rouesne, D. Thiaudiere, J. -l. Grosseau-Poussard, B. Panicaud, M. Le Saux
Summary: This study investigates the evolution of stresses and associated mechanisms during the relaxation of the zirconia layer formed during the oxidation of Zircaloy-4 under different temperatures. X-ray diffraction and Raman spectroscopy are used to determine the phases and stresses in the oxide layer. The results show that the proportion of the tetragonal phase decreases during oxidation and the stresses depend on temperature and relax during oxidation. Two mechanical models are proposed to describe the stress evolution, considering the viscoplasticity of the oxide.
Article
Materials Science, Multidisciplinary
Max D. A. Valentine, Vimal Dhokia, Joseph Flynn, Sophie A. M. McNair, Alexander J. G. Lunt
Summary: The concentration and size of oxides and precipitate inclusions in Additively Manufactured (AM) components greatly affect their strength and fracture toughness. These features are sensitive to powder production parameters and the number of times a powder has been reused. This study used synchrotron X-ray powder diffraction to analyze the growth rates and distribution of oxides and precipitates as temperature changes. The results showed differences in residual strain and provided insights on the material properties and build reliability of AM parts.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Adam Lindkvist, Wenjun Liu, Dorte Juul Jensen, Yubin Zhang
Summary: This study non-destructively examined the crystallographic orientations and residual stresses in partially recrystallized beta titanium-Gum Metal in 3D. Contrary to common assumptions, significant local stresses and stress variations were observed within the recrystallizing grains. The development of these local residual stresses was found to depend on the plastic deformation mode and material's elastic constants, rather than grain properties. These findings are valuable for the design of advanced materials with heterogeneous microstructures.
MATERIALS RESEARCH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Brendan Ensor
Summary: Zircaloy-4 samples with varying Ni content (0-483 wt. ppm) were exposed in an autoclave for 2800 days to study oxidation and hydrogen pickup in Zr alloys. The addition of Ni resulted in significantly higher hydrogen pickup. There was a minor beneficial effect of Ni on corrosion rate when controlling for hydrogen content, indicating potential improvement in corrosion resistance with Ni if hydrogen content is controlled via other means.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yubin Zhang, Tianbo Yu, Ruqing Xu, Jesper Thorborg, Wenjun Liu, Jon Tischler, Andy Godfrey, Dorte Juul Jensen
Summary: The intragranular strains and microstructure within recrystallizing grains in single phase pure iron have been studied using synchrotron micro-diffraction. Residual elastic strains of up to 1-2 x 10(-3) were observed in the recrystallizing grains, contradicting common knowledge. The local strain variations within individual grains can be similar in magnitude to those between different grains. The effects of processing and microstructural parameters on the development of local residual elastic strains and microstructure have been quantified.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Goutam Kuri, Harry Ramanantoanina, Shaileyee Bhattacharya, Johannes Bertsch, Matthias Martin
Summary: This work conducts atomic-scale experimental and modeling studies on the zirconium oxide microstructure at the metal-oxide interface and the redox chemistry of nickel alloying element in the corrosion layer of a serviced boiling water reactor Zircaloy-2 fuel rod cladding. Through synchrotron-based X-ray microprobe techniques, the characteristics of the corrosion layer are analyzed at the atomic level. Experimental results and theoretical calculations show that the divalent nickel ions in the zirconium oxide microstructure have a significant influence on the hydrogen evolution reaction and the oxidation reaction in irradiated Zircaloy-2.
Article
Materials Science, Multidisciplinary
Jianping Xu, Chengze Liu, Jinping Wu, Huan Li, Boyi Qi, Di Zhang, Yusheng Zhang, Yongqing Zhao, Lian Zhou
Summary: The effect of microscale residual stresses on the initial corrosion behavior of Ti35 alloys in boiling nitric acid solutions was investigated. It was found that the concentration of residual stresses accelerated the dissolution of the alloys, but the formation of oxide films prevented the corrosion medium from reaching the surface of the alloys, reducing the effect of residual stresses on corrosion.
Article
Engineering, Marine
M. Hashemzadeh, Y. Garbatov, C. Guedes Soares
Summary: This study investigates the welding-induced residual stresses and distortions of butt-welded non-corroded and corroded steel plates, taking into account environmental conditions and material properties. The importance of considering steel ageing in the repair process is highlighted, and the developed methodology allows for critical operational decisions to be made with greater ease and confidence. Different welding sequence scenarios can also be analysed to minimize repair costs in repairing ageing structures.
Article
Materials Science, Multidisciplinary
Andreas Malmelov, Carl-Johan Hassila, Martin Fisk, Urban Wiklund, Andreas Lundback
Summary: In this paper, residual stresses in additive manufactured samples were simulated using a thermo-mechanical finite element model, and the simulation results were compared with experimental results. The study found that the variation in process parameters has no significant influence on the trend and magnitude of residual stresses.
MATERIALS & DESIGN
(2022)
Article
Automation & Control Systems
Daniel Cirillo Marques, Daniel Iwao Suyama, Renato Altobelli Antunes, Amauri Hassui
Summary: The aim of this study was to investigate the effects of milling parameters on tool wear, surface residual stress, and corrosion resistance of UNS S32750 super duplex stainless steel. The results showed that the best cutting quality could be achieved by lowering cutting speed and feed rate.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Arshad Yazdanpanah, Mattia Franceschi, Gianluca Bergamo, Massimiliano Bonesso, Manuele Dabala
Summary: This study investigated the SCC and electrochemical behavior of selective laser melted 316L stainless steel under the combined effect of surface residual stresses and energy input variation. It was found that there was a significant correlation between columnar subgrains width and pore size with the electrochemical response and SCC susceptibility. A critical pore size affecting local corrosion behavior was identified, which decreased with an increase in residual stress magnitude.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Fuzhou Han, Fusen Yuan, Geping Li, Yingdong Zhang, Wenbin Guo, Muhammad Ali, Jie Ren, Chengze Liu, Hengfei Gu, Gaihuan Yuan
Summary: TEM and energy-dispersive X-ray spectroscopy were used to characterize the crystallographic and microstructural features of nano-precipitates in the alpha-Zr matrix of the Zircaloy-4 alloy, revealing the presence of C16-type Zr2Fe phase and various planar defects.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Mechanics
T. Wu, S. Degener, S. Tinkloh, A. Liehr, W. Zinn, J. P. Nobre, T. Troester, T. Niendorf
Summary: This study introduces reliable experimental approaches to accurately measure the distribution of residual stresses in FMLs, with a special focus on the interface between metal and FRP. Results show that different methods are able to assess the qualitative distribution and magnitudes of residual stresses, demonstrating reliability.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Jan Kaufman, Zbynek Spirit, Vijay Krishnaswami Vasudevan, Matthew Alan Steiner, Seetha Ramaiah Mannava, Jan Brajer, Ladislav Pina, Tomas Mocek
Summary: Aluminium alloy 5083 was treated with Laser Shock Peening, resulting in generation of compressive residual stresses and improvement in corrosion fatigue strength. The type and method of peening had an impact on the character of the residual stresses.
Article
Automation & Control Systems
Maria Cindra Fonseca, Marcos Caetano Melado, Marcel Freitas de Souza, Cassio Barbosa
Summary: In this study, AA5086 aluminium alloy was welded using different shielding gases and the effects on residual stresses, mechanical and microstructural properties were evaluated. The new gas mixture produced compressive residual stresses and welded joints with hardness values close to the base metal. Furthermore, it resulted in lower porosity compared to other shielding gases.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Paul Iannarelli, Douglas Beaumont, Yanwen Liu, Xiaorong Zhou, Timothy L. Burnett, Michele Curioni, Stuart B. Lyon, Simon R. Gibbon, Suzanne Morsh, Seyedgholamreza Emad, Teruo Hashimoto, Niek Hijnen
Summary: The epoxy amine-based seawater ballast tank coating was characterized after 18 years of exposure, revealing significant morphological changes in pigments and binders, as well as the orientation of pigments towards the surface impacting the degradation of the coating. Different types of damage were observed in barrier pigments and aluminum flake metal pigment, with the former fracturing internally and the latter failing at the pigment/binder interface.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Suzanne Morsch, Stuart B. Lyon, Simon Gibbon, Mark Irwin
Summary: The internal nanostructure of epoxy resins has negligible effect on the extent and kinetics of moisture sorption, despite being able to be varied through careful optimization of the cure schedule.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
C. Sofras, J. Capek, A. Arabi-Hashemi, C. Leinenbach, M. Frost, K. An, R. E. Loge, M. Strobl, E. Polatidis
Summary: This study investigates the manipulation of crystallographic texture in austenitic stainless steels using laser-powder bed fusion (L-PBF) to tailor their deformation behavior. By adjusting laser power and scanning speed, tailored crystallographic textures can be obtained. The influence of crystallographic texture on deformation behavior is demonstrated, and the asymmetry between tension and compression is discussed.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Matteo Busi, Efthymios Polatidis, Florencia Malamud, Winfried Kockelmann, Manuel Morgano, Anders Kaestner, Anton Tremsin, Nikola Kalentics, Roland Loge, Christian Leinenbach, Takenao Shinohara, Markus Strobl
Summary: In this study, neutron Bragg edge tomography was used to analyze stainless steel 316L additive manufacturing samples created by standard laser powder bed fusion and a novel three-dimensional laser shock peening technique. The research focused on analyzing the bulk density properties, mapping defects, obtaining strain maps, and describing crystallographic texture properties of the samples. The results showed that the shock peening treatment not only increased the bulk density of the samples but also created a significant compressive strain region.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
E. Polatidis, S. Shukla, J. Capek, S. Van Petegem, N. Casati, R. S. Mishra
Summary: The mechanical behavior of a metastable high entropy alloy (HEA) with composition Fe39-Mn20-Co20-Cr15-Si5-1Al at% was investigated, and the deformation mechanisms contributing to its mechanical properties were revealed using in situ uniaxial tensile tests with synchrotron X-ray diffraction. Three distinct deformation regimes were observed, including an initial elastic regime, a dislocation-based plasticity regime, and a phase transformation regime. The phase transformation was accompanied by the formation of hexagonal close-packed (hcp) martensite and slip in the parent austenitic phase, as well as twinning in unfavorably oriented grains.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Applied
S. Gh R. Emad, S. Gad, Q. Ai, Y. Wan, S. Morsch, T. L. Burnett, Y. Liu, S. B. Lyon, J. Li, X. Zhou
Summary: This study investigated the influence of additional pigmentation on the leaching of inhibitor pigments and found that the addition of soluble/sparingly soluble pigments increased the leaching rate. This is attributed to the formation of clusters comprised of both the inhibitor pigment and the additional pigment, which introduces transport paths in the organic coating and facilitates the leaching of the inhibitor pigment.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Multidisciplinary Sciences
Maria S. Yankova, Alistair Garner, Felicity Baxter, Samuel Armson, Christopher P. Race, Michael Preuss, Philipp Frankel
Summary: The corrosion properties of engineering alloys are influenced by microstructural variations at the local level. The orientation of metal grain can affect the protectiveness of oxide, providing a potential avenue for improving corrosion performance. Understanding corrosion mechanisms is crucial for reducing global corrosion costs.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Florencia Malamud, Javier Roberto Santisteban, Miguel Angel Vicente Alvarez, Matteo Busi, Efthymios Polatidis, Markus Strobl
Summary: This paper presents a model for describing the attenuation coefficient of textured polycrystalline materials based on a single-crystal to polycrystalline approach. The model evaluates the Bragg contribution to the attenuation coefficient as a combination of the Bragg-reflected component of imperfect single crystals with different orientations. The model's optimization is demonstrated through experiments on calibration samples and its ability to simulate textured samples in different orientations.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Engineering, Mechanical
Andrew R. Warwick, Rhys Thomas, M. Boleininger, O. Koc, G. Zilahi, G. Ribarik, Z. Hegedues, U. Lienert, T. Ungar, C. Race, M. Preuss, P. Frankel, S. L. Dudarev
Summary: Zirconium alloys used in pressurized water reactors are subjected to neutron exposure, resulting in the accumulation of defects and dislocations. Through synchrotron microbeam X-ray diffraction measurements and atomistic simulations, we observe and explain the variation of dislocation density as a function of exposure. In the high dose limit, the population of dislocation loops in dynamic equilibrium follows a power law distribution with an exponent of approximately 2.2, which compares favorably with experimentally measured values.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Engineering, Manufacturing
Konstantinos A. Liogas, Kwang Boon Lau, Zifan Wang, David N. Brown, Efthymios Polatidis, Pei Wang, Alexander M. Korsunsky
Summary: Equiatomic Co-Fe alloy with controlled slow cooling through thermal post-processing has shown excellent soft magnetic properties, making it suitable for manufacturing three-dimensional complex-shaped electromagnetic cores using Laser Powder Bed Fusion technique.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Rhys Thomas, David Bowden, David Lunt, David Stewart, Michael Preuss
Summary: Hard-facing alloys in nuclear applications need to have resistance to deformation and wear, while minimizing transmutation to problematic elements. The Fe-based alloy RR2450 has been developed as a potential replacement for Co-based hard-facing alloys, showing high strength and complex multi-phase stainless steel properties. Through neutron diffraction and electron microscopy techniques, it was discovered that despite the high volume fraction of hard phases, the relatively soft ductile ferrite and austenite phases deform plastically first.
Article
Nuclear Science & Technology
A. Chaieb, R. Largenton, A. Ambard, B. Baurens, M. Ton That
Summary: CYRANO3 is a thermal-mechanical industrial code developed by Electricite de France (EDF) to simulate nuclear fuel rod performance. The code has been recently improved to allow for modeling fuel melting. The results demonstrate that CYRANO3 is a powerful tool to simulate fuel rod behavior during power ramp tests.
NUCLEAR TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Mia Maric, Rhys Thomas, Alec Davis, David Lunt, Jack Donoghue, Ali Gholinia, Marc De Graef, Tamas Ungar, Pierre Barberis, Florent Bourlier, Philipp Frankel, Pratheek Shanthraj, Michael Preuss
Summary: Hydride precipitation in zirconium alloys, specifically Zircaloy-4, was investigated using dictionary indexing of Kikuchi patterns, orientation relationship analysis, and x-ray diffraction. The presence of both delta and gamma hydride phases was confirmed, with the gamma phase exhibiting a distinct orientation relationship with the matrix. Local stresses influenced the morphology and orientation of the delta hydride, leading to changes during precipitation. By analyzing the orientation relationships, the stability of both delta and gamma hydrides at room temperature could be understood.
SCRIPTA MATERIALIA
(2024)
Article
Materials Science, Multidisciplinary
A. P. C. Wylie, A. Reza, G. Harrison, M. Taylor, B. R. Dacus, F. Hofmannb, M. P. Short, S. Kirk, M. Preuss, E. J. Pickering
Summary: Eurofer97 steel was studied to investigate the effects of irradiation and heat treatment on weld hardness and thermal diffusivity. The results showed that both the irradiation temperature and post-weld heat treatment had a recovery effect on weld hardness. Proton-irradiation damage did not contribute to nanohardness. X-ray diffraction analysis revealed an increased dislocation density in the fusion zone, which decreased in the parent material. The thermal diffusivity was found to be systematically underestimated by transient grating spectroscopy compared to laser flash analysis.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Liuming Wei, Jingwen Li, Yonggang Li, Qirong Zheng, Fan Cheng, Chuanguo Zhang, Jingyu Li, Gaofeng Zhao, Zhi Zeng
Summary: This study investigates the influence of He-V complexes on H behaviors on different W surfaces using DFT calculations. The results show that H dissolution is most difficult but H trapping is easiest on the W (110) surface, while the opposite is true on the W (111) surface. Moreover, the presence of He-V complexes increases the difficulty of H diffusion from bulk to surface and desorption.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yan Meng, Song Zeng, Chen Chen, Chaowen Zhu, Huahai Shen, Xiaosong Zhou, Xiaochun Han
Summary: The characteristics of magnetron sputtered Cr coatings vary with different temperature, bias voltage, and pressure. Coatings with random orientation, good crystallinity, and small grain size exhibit favorable oxidation behavior, while coatings with strong (200) texture, poor crystallinity, and large grains have many intrinsic defects that are detrimental to the protection property of the Cr coatings.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xinyuan Xu, Zefeng Yu, Wei-Ying Chen, Aiping Chen, Arthur Motta, Xing Wang
Summary: This study presents an automated approach for characterizing grain morphology in TEM images recorded during ion irradiation. By combining a machine learning model and a computer vision algorithm, comparable results to human analysis can be achieved with significantly reduced analysis time. Researchers can train their own models following the procedures described in this study to automate grain morphology analysis of their own TEM images.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shihao Wu, Dong Wang, Yapei Zhang, Koji Okamoto, Marco Pellegrini, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: The oxidation and degradation mechanisms of Cr coating on Zr alloy cladding under high temperature steam atmosphere are summarized, and a mathematical analysis model is established to predict the changes in coating thickness. The model is applied in the analysis of structure evolution under different conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. Diaz-Mena, J. de Prado, M. Roldan, I. Izaguirre, M. Sanchez, M. Rieth, A. Urena
Summary: The brazeability of a cupronickel alloy was evaluated as a filler alloy for high-temperature joining of tungsten to steel. The study investigated the brazing conditions and the impact of the selected filler on the joint quality using numerical software. The results showed different metallurgical interactions and diffusion phenomena between the filler alloy and the base materials at different temperatures. The study emphasized the importance of selecting a suitable filler to mitigate residual stresses in the joints.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Pengcheng Zhu, Yajie Zhao, Yan-Ru Lin, Jean Henry, Steven J. Zinkle
Summary: This study investigates the effect of heavy-ion irradiation on radiation hardening in high-purity binary alloy Fe18Cr. Nanoindentation testing and high-quality TEM imaging were conducted to extract hardness and microstructure information. The strength factor was accurately calculated based on the detailed TEM characterization of irradiated microstructures, and a refined hardening superposition method was applied to quantify the mechanical properties of ion-irradiated materials.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bin Wu, Haixia Ning, Hanzhen Zhu, Jianjun Chen, Kang Wang, Daiyu Zhang, Fu Wang, Qilong Liao
Summary: This study discusses the effects of ZrO2 and B2O3 on the phase composition and properties of SAP-based glass-ceramics. The results show that ZrO2 addition improves the formation of NZP phase while restricting the crystallization of AlPO4 phases. The correct ratios of ZrO2 and B2O3 allow only the formation of NZP phase within the SAP glass.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Greg Johnson, Benjamin Maier, Tyler Dabney, Kumar Sridharan
Summary: Cr-Nb bilayer coatings were developed using cold spray deposition to improve the limiting operational temperature of Cr-coated Zr-alloy system. The coatings exhibited outstanding oxidation resistance at high temperatures and formed continuous intermetallic compound layers at the interfaces.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Padhraic L. Mulligan, Andrew T. Nelson, Chad M. Parish, Patrick A. Champlin, Xiang Chen, Daniel Morrall, Jason M. Harp
Summary: Environmental barrier coatings are being developed to reduce oxidation and embrittlement in Zr-based materials. Chromium nitride is a candidate for this application, but understanding its impact on irradiation-induced creep and microstructure is critical.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Dexuan Yan, Xinlei Cao, Ke Shen
Summary: This study investigated the purification mechanism of polycrystalline graphite by comparing IG-11 graphite with IG-110 nuclear grade graphite. The analysis revealed that metallic impurities in IG-11 were primarily segregated within graphite porosities, while IG-110 demonstrated a significant reduction in impurities. This research contributes to the development of innovative graphite purification techniques for greater purity and stronger oxidation resistance.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wei Xu, Wei Peng, Lei Shi, Qi Sun
Summary: This paper investigates the oxidation and shape evolution of matrix graphite in high temperature gas-cooled reactors during air-ingress accidents. A reaction kinetics model is established and computational fluid dynamics with a dynamic mesh method is used to simulate the oxidation process. The results show that the geometric shape of graphite changes significantly with increasing flow rate, and the graphite pebbles tend to form a structure with a narrow front and wide tail.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Allison Harward, Casey Elliott, Michael Shaltry, Krista Carlson, Tae-Sic Yoo, Guy Fredrickson, Michael Patterson, Michael F. Simpson
Summary: This paper investigates the hygroscopic properties of eutectic LiCl-KCl absorbed into zeolite-4A. The study finds that water absorption and corrosion worsen with increasing salt loading. It also suggests that the salt can be stored in a non-inert atmosphere for a certain period of time.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Takaaki Koyanagi, Xunxiang Hu, Christian M. Petrie, Gyanender Singh, Caen Ang, Christian P. Deck, Weon-Ju Kim, Daejong Kim, James Braun, Yutai Katoh
Summary: This study provides critical experimental data on the effects of irradiation on the hermeticity of SiC composite cladding, finding that irradiation can cause a decrease in hermeticity and cracking, and coating the outer surface can mitigate the cracking issue.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
S. Krat, A. Prishvitsyn, Yu. Gasparyan
Summary: This study proposes a probabilistic and diffusion-based model to describe the co-deposition of multiple hydrogen isotopes with slowly grown metal layers. The model calculates the relative concentrations of different hydrogen isotopes in the co-deposited metal layers. It is found that if hydrogen isotopes have different detrapping energies, only the isotope with the highest detrapping energy shows a monotonic decrease in concentration with deposition temperature. Furthermore, the study evaluates the uncertainty of tritium concentration in the co-deposited layer based on the uncertainty in detrapping energy of tritium and deuterium, predicting a >10% tritium concentration uncertainty for a 0.01 eV difference.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tijo Vazhappilly, Arup Kumar Pathak
Summary: This study investigates the effect of Ce atom substitution in UO2 on its thermophysical properties using density functional theory. The results show that the Ce substitution levels and the oxidation state of Ce/U atoms strongly influence the band structure and specific heat capacity of the UO2 lattice. These findings provide important insights into the fuel properties of UO2 under reactor conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)