A. Quadling D. Bowden C. Hardie A. Vasanthakumaran
The STEP environment will include magnetic, thermal, mechanical and environmental loads far greater than those seen in the Joint European Torus campaigns of the past decade or currently contemplated for ITER. Greater still are the neutron peak dose rates of 10-6displacements per atom, per second, which in-vessel materials in STEP are …
PreprintJie Hou Duc Nguyen-Manh Jun Song
We present a computational study employing Object Kinetic Monte Carlo simulations to investigate the behavior of D in self-irradiated Mo samples. Our simulations reveal that vacancy clusters contributing significantly to D diffusion, trapping, and desorption behavior. It is found that vacancy clusters play an important role in slowing the diffusion…
PreprintJacob B.J. Chapman Mark. R. Gilbert Duc Nguyen-Manh
Materials within a viable D-T fusion power-plant will be subject to hydrogen isotope permeation through implantation, adsorption and transmutation. Hydrogen is known to have low solubility in iron but irradiation-induced defects such as vacancies can strongly trap multiple hydrogen atoms. Tritium breeding blankets will be required to compensate for…
PreprintI. Ipatova G. Greaves D. Terentyev M.R. Gilbert Y.-L. Chiu
Helium-induced defect nucleation and accumulation in polycrystalline W and W-0.5wt.%ZrC (W-ZrC) were studied in-situ using the transmission electron microscopy (TEM) combined with 40 keV He+ irradiation at 800 and 1000 °С at the maximum damage level of 1 dpa. Radiation-induced dislocation loops were not observed in the current…
PublishedO. El Atwani H. T. Vo M. A. Tunes C. Lee A. Alvarado N. Krienke J. D. Poplawsky A. A. Kohnert J. Gigax W.-Y. Chen M. Li Y. Q. Wang J. S. Wróbel D. Nguyen-Manh J. K. S. Baldwin O. U. Tukac E. Aydogan S. Fensin E. Martinez
In the quest of new materials that can withstand severe irradiation and mechanical extremes for advanced applications (e.g. fission & fusion reactors, space applications, etc.), design, prediction and control of advanced materials beyond current material designs become paramount. Here, through a combined experimental and simulation methodol…
PublishedAndrew M. Alvarado Chanho Lee Jan S. Wróbel Damian Sobieraj Duc Nguyen-Manh Jonathan D. Poplawsky Saryu Jindal Fensin Enrique Martinez Osman El-Atwani
Short-range order (SRO) in multicomponent concentrated alloys affects their mechanical response. Hence, is paramount to understand how composition modifies the chemical ordering in the system to design materials with optimal properties. We present here a methodology to predict the SRO and thermodynamic properties in chemically complex systems and a…
PurchaseMatthew J. Lloyd Jack Haley Bethany Jim Robert Abernethy Mark R. Gilbert Enrique Martinez Osman El-Atwani Duc Nguyen-Manh Michael P. Moody Paul A. J, Bagot David E. J. Armstrong
In this study, we compare the formation of radiation induced defects in W and W-Re-Os alloys, exposed to an equivalent dose of self-ion and neutron irradiation. Transmutation reactions in the neutron irradiated material are simulated in the ion implanted materials by alloying with representative quantities of Re and Os (1.4 and 0.1 at.% respecti…
PublishedWei Wang Ruiqiang Zhang Amir A Shirzardi Daniel S Balint Lee Aucott Jun Jiang
Thermally-induced cracking typically occurs during the cooling stage of various manufacturing processes, and is commonly seen in multiphase or the joints of dissimilar materials due to mismatch in their thermo-mechanical properties, such as thermal expansion, elastic-plastic deformation and, in some cases, phase transformation. However, the underly…
Preprint PublishedX. Litaudon U. Fantz R. Villari V. Toigo M.- H. Aumeunier J.- L. Autran P. Batistoni E. Belonohy S. Bradnam M. Cecchetto A. Colangeli F. Dacquait M. Dentan M. De Pietri J. Eriksson M. Fabbri G. Falchetto L. Figini J. Figueiredo D. Flammini N. Fonnesu L. Frassinetti R. Garcia-Alia M. Garcia-Munoz Z. Ghani J. Gonzalez-Martin E. Grelier L. Di Grazia B. Grove C. L. Grove A. Gusarov A. Hjalmarsson O. Hyvärinen V. Ioannou-Sougleridis L. Jones H.- T. Kim M. Kłosowski M. Kocan B. Kos L. Kos D. Kotnik E. Laszynska D. Leichtle I. Lengar E. Leon A. J. Lopez-Revelles S. Loreti M. Loughlin K.G. Mcclements G. Mariano M. Mattei K. Mergia J. Mietelski R. Mitteau S. Moindjie D. Munteanu R. Naish C. Nobs L. W. Packer S. Pamela R. Pampin A. Pau A. Peacock E. Peluso Y. Peneliau J. Peric V. Radulović F. Rimini D. Ricci L. Sanchis Sanchez P. Sauvan M.I. Savva A. Snicker L. Snoj I. E. Stamatelatos Ž. Štancar N. Terranova T. Vasilopoulou R. Vila J. Waterhouse A. Žohar The Nbtf Team The Jet Contributors The Eurofusion Tokamak Exploitation Team
ITER is of key importance in the European fusion roadmap as it aims to prove the scientific and technological feasibility of fusion as a future energy source. The EUROfusion consortium of labs is contributing to the preparation of ITER scientific exploitation and operation and aspires to exploit ITER outcomes in view of DEMO. The paper provides …
PreprintYao Ren Robert Skilton
Piping systems that transport coolant and breeding fluid are naturally an essential part of the support system of the nuclear fusion power plants. Following a campaign of operations, the reactor is required to be shut down and maintained entirely. Pipes connected to the reactor components are to be cut, re-welded or re-joined, and inspected non-des…
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