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Artykuły w czasopismach na temat "Vacuum Arc Remelting (VAR)"
Campbell, John. "A Future for Vacuum Arc Remelting and Electroslag Remelting—A Critical Perspective". Metals 13, nr 10 (23.09.2023): 1634. http://dx.doi.org/10.3390/met13101634.
Pełny tekst źródłaMucsi, C. S., Rubens Nunes de Faria Jr., E. Galego i J. L. Rossi. "Consolidation of Compacted Zircaloy Chips via Vacuum Arc Melting - Analysis of the Electric Arc". Materials Science Forum 498-499 (listopad 2005): 258–63. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.258.
Pełny tekst źródłaShi, Zhiyue, Wenquan Cao, Chengjia Shang i Xiaodan Zhang. "Effect of inclusion type on the rotating bending fatigue properties of a high carbon chromium bearing steel". IOP Conference Series: Materials Science and Engineering 1249, nr 1 (1.07.2022): 012032. http://dx.doi.org/10.1088/1757-899x/1249/1/012032.
Pełny tekst źródłaAlam, M. K., S. L. Semiatin i Z. Ali. "Thermal Stress Development During Vacuum Arc Remelting and Permanent Mold Casting of Ingots". Journal of Manufacturing Science and Engineering 120, nr 4 (1.11.1998): 755–63. http://dx.doi.org/10.1115/1.2830216.
Pełny tekst źródłaKonopatsky, Anton S., Yulia S. Zhukova i Mikhail R. Filonov. "Production and Quality Assessment of Superelastic Ti-Nb-Based Alloys for Medical Application". Advanced Materials Research 1040 (wrzesień 2014): 130–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.130.
Pełny tekst źródłaKarimi-Sibaki, E., A. Kharicha, M. Wu, A. Ludwig i J. Bohacek. "A Parametric Study of the Vacuum Arc Remelting (VAR) Process: Effects of Arc Radius, Side-Arcing, and Gas Cooling". Metallurgical and Materials Transactions B 51, nr 1 (29.10.2019): 222–35. http://dx.doi.org/10.1007/s11663-019-01719-5.
Pełny tekst źródłaDescotes, Vincent, Thibault Quatravaux, Jean-Pierre Bellot, Sylvain Witzke i Alain Jardy. "Titanium Nitride (TiN) Germination and Growth during Vacuum Arc Remelting of a Maraging Steel". Metals 10, nr 4 (22.04.2020): 541. http://dx.doi.org/10.3390/met10040541.
Pełny tekst źródłaYUAN, LANG, GEORGI DJAMBAZOV, PETER D. LEE i KOULIS PERICLEOUS. "MULTISCALE MODELING OF THE VACUUM ARC REMELTING PROCESS FOR THE PREDICTION ON MICROSTRUCTURE FORMATION". International Journal of Modern Physics B 23, nr 06n07 (20.03.2009): 1584–90. http://dx.doi.org/10.1142/s0217979209061305.
Pełny tekst źródłaLv, Guo Yun, i Shui Xian Hu. "Research on Vacuum Consumable Arc Remelting Furnace Control System with Drop Short Pulses Testing". Advanced Materials Research 605-607 (grudzień 2012): 1670–74. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1670.
Pełny tekst źródłaGeanta, Victor, Ionelia Voiculescu, Radu Stefanoiu i Elena Roxana Rusu. "Stainless Steels with Biocompatible Properties for Medical Devices". Key Engineering Materials 583 (wrzesień 2013): 9–15. http://dx.doi.org/10.4028/www.scientific.net/kem.583.9.
Pełny tekst źródłaRozprawy doktorskie na temat "Vacuum Arc Remelting (VAR)"
Polton, Richard. "Numerical grid generation and its application in the solution of a model of the Vacuum-Arc Remelting (VAR) process". Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323918.
Pełny tekst źródłaPoullain, Thomas. "Etude numérique et expérimentale de l’évaporation sous vide d’alliages métalliques : application à la refusion VAR de Zircaloy-4". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0189.
Pełny tekst źródłaComposition and chemical segregation control is primordial when producing high value-added materials, such as zirconium alloys for nuclear industry. Vacuum processing allows production very high purity ingot, however it also presents an additional problematic concerning control and prediction of alloy elements evaporation. This PhD dissertation aims at improving prediction of volatile metallic species evaporation during vacuum elaboration, especially during Zircaloy 4 VAR (Vacuum Arc Remelting).First, the evaporation kinetics and the expansion of the metal vapour produced during vacuum melting is investigated. The study is done with a combination of volatilisation experiments using an experimental electron beam furnace and particle based numerical simulation (FPM) of vapour behaviour. Our volatilisation studies on pure metals, Ti and Zr, show the importance of collisions above the liquid on the vapour expansion and its recondensation. Determination of Fe and Sn vapour expansion during Zy4 vacuum melting combined with particle simulation, allowed us to determine thermodynamic activity coefficients values for these elements in liquid Zy4.Then, metallic vapour expansion under VAR conditions is studied, with particular interest shown to condensation flows on the different surfaces. Application of our numerical model to Zy4 shows that the vapour deposited on the mould has a very different composition compared to the alloy. Finally, the particle model is coupled to an ingot growth model and we study the influence of evaporation, condensation and crown reincorporation with regard to volatile solute segregation and depletion. This coupling also provides a first prediction of crown thickness and composition and we compare them to industrial crown samples
Ghazal, Ghassan. "Etude de la propreté inclusionnaire des lingots VAR - Application aux alliages de titane". Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL016N/document.
Pełny tekst źródłaThe presence of exogeneous inclusions has always been a major concern for the titanium industry. To help improve the inclusional cleanliness of VAR (Vacuum Arc Remelting) titanium ingots, a numerical and experimental study was undertaken.The numerical model is capable of predicting the motion and dissolution of a hard-α defect falling from the electrode tip into the ingot melt pool during vacuum arc remelting. It is implemented in SOLAR, a CFD code that simulates the ingot growth and solidification. The dissolution of the inclusion is governed by nitrogen diffusion from the defect towards the surrounding molten metal. A model describing this phenomenon predicts the particle size evolution and the nitrogen profile at each moment. The motion of the spherical particle is tracked using a Lagrangian model and the influence of turbulence is accounted for by a modification of the drag coefficient.Results show that inclusion removal is difficult with a single melt since the growth of a β-phase layer leads to an initial increase in the defect size. The inclusion behaviour is highly dependent on the pool hydrodynamics and on inclusion characteristics.In order to clarify dissolution aspects of these defects and to measure their dissolution kinetics, synthetically processed defects were introduced into molten titanium heated in an electron beam melting furnace. Dissolution rates were calculated by measuring the size of the defects before and after the experiments and the results were used to validate the numerical models. Furthermore, the experiments show that dissolution kinetics highly depend on fluid motion and temperature
Revil-Baudard, Mathieu. "Modélisation et étude de la macroségrégation au cours de la refusion à l'arc sous vide : application aux alliages de zirconium". Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0297/document.
Pełny tekst źródłaVacuum Arc Remelting (VAR) is used to produce high performance alloys for the aeronautic (special steels, superalloys, titanium alloys) and nuclear (zirconium alloys) industries. As for all casting processes, the control of the chemical homogeneity and the metallurgical structure in VAR ingots is an important industrial issue. The goal of this thesis is to identify, for zirconium alloys in particular, the effects of the natural convection and the forced convection due to the electromagnetic stirring on macrosegregation. To this purpose, a numerical model has been developed. It is based on the solution of the coupled transient energy, momentum and solute transport equations, under laminar or turbulent flow conditions. The solidification modeling accounts for a full coupling between energy and solute transport in the mushy zone. The finite diffusion of solutes in both solid and liquid phases can be taken into account to describe microsegregation. In addition, chemically homogeneous Zircaloy-4 and M5® electrodes have been specially remelted in an industrial VAR furnace at the CEZUS plant in Ugine (Savoie, France). The macrosegregation of the ingots has been measured. The comparison between the experimental measurements and the simulation results showed that for an alloy with a large solidification interval (like Zircaloy-4), the solutal convection in the mushy zone could have an essential influence on the macrosegregation in the inner part of the ingot. Furthermore, the motion of equiaxed grains caused by a strong stirring seems to seriously intensify macrosegregation in the outer part of the ingot. For an alloy with a small solidification interval (like M5®), we have shown that the macrosegregation depends more specifically on the forced convection due to the type of stirring applied during the remelting
Hans, Stéphane. "Modélisation des transferts couplés de chaleur, de soluté et de quantité de mouvement lors de la refusion à l'arc sous vide (VAR) : application aux alliages de titane". Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL023N.
Pełny tekst źródłaBanos, Julien. "Modélisation du procédé de refusion à l’arc sous vide : Échanges thermiques et défauts de solidification". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0117.
Pełny tekst źródłaThe Vacuum Arc Remelting (VAR) process is used in the production of high-added value metals such as titanium alloys or nickel-based superalloys for the aerospace industry. The control of solidification conditions is an important industrial issue in order to process ingots of adequate chemical homogeneity and free of solidification defects. The work presented in this manuscript aims at improving the description of heat exchanges in a VAR process model (SOLAR) and at proposing a new approach for the prediction of segregated channels type solidification defects. First, the description of the heat exchanges in the model between the electrode, the ingot, the mould and the cooling circuit has been improved. These modifications were validated by comparing the numerical results with measurements from real industrial melts. An original experimental apparatus for measuring the external mould temperature adapted to industrial melts was designed. This apparatus was used during an experimental campaign on an industrial site during the remelting of a titanium alloy. The measurements obtained were compared with the numerical results from SOLAR. These two activities led to a first implementation of the side-arcing phenomenon in the model. In parallel, a multi-scale numerical approach was developed to predict the formation of segregated channels as a function of local solidification conditions. A first study on a Sn-Pb alloy was carried out and a mathematical criterion was calculated from the results. This first study shows a much lower impact of the thermal gradient on the formation of segregated channels than that generally considered in the literature
Wani, Nitin Yashwant. "Simulation of thermal stresses in vacuum arc remelting process". Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1178820121.
Pełny tekst źródłaHosamani, Laxmappa G. "Experimental and theoretical heat transfer studies in vacuum arc remelting /". Full text open access at:, 1988. http://content.ohsu.edu/u?/etd,166.
Pełny tekst źródłaXu, Xuahua. "Grain development during vacuum arc remelting of nickel based superalloys". Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368958.
Pełny tekst źródłaMUCSI, CRISTIANO S. "Estudo sobre o processo V.A.R. (Vacuum Arc Remelting) escala de laboratorio". reponame:Repositório Institucional do IPEN, 1996. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10472.
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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Części książek na temat "Vacuum Arc Remelting (VAR)"
Sartkulvanich, Partchapol, Don Li, Oscar Yu, Ernie Crist i Shane Probst. "Applications of Finite Element Modeling on Vacuum ARC Remelting (VAR) and Plasma ARC Melting (PAM) Processes of Titanium Alloys". W Proceedings of the 13th World Conference on Titanium, 365–69. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch56.
Pełny tekst źródłaXianghua, Shao, Li Shiqi i Xu Kuangdi. "Vacuum Arc Remelting". W The ECPH Encyclopedia of Mining and Metallurgy, 1–2. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_999-1.
Pełny tekst źródłaZhang, W., P. D. Lee i M. McLean. "Inclusion Behaviour During Vacuum Arc Remelting of Nickel Based Superalloys". W Intermetallics and Superalloys, 121–28. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607285.ch21.
Pełny tekst źródłaPericleous, Koulis, Georgi Djambazov, Mark Ward, Lang Yuan i Peter D. Lee. "A Multi-Scale 3D Model of the Vacuum Arc Remelting Process". W Supplemental Proceedings, 291–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118357002.ch38.
Pełny tekst źródłaMcCulley, Daniel, Joshua Motley, Matthew Cibula i Paul King. "Elucidating the Relationship Between Arc Behavior and Solidification Defects During Vacuum Arc Remelting of Superalloys". W The Minerals, Metals & Materials Series, 994–1003. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92381-5_95.
Pełny tekst źródłaKing, Paul E., Matthew Cibula i Joshua Motley. "Control of the Distribution of Vacuum Arcs Within Vacuum Arc Remelting with Externally Applied Magnetic Fields". W 11th International Symposium on High-Temperature Metallurgical Processing, 273–87. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36540-0_25.
Pełny tekst źródłaPatel, Ashish, David W. Tripp i Daniel Fiore. "Application of a Model for Simulating the Vacuum Arc Remelting Process in Titanium Alloys". W Proceedings of the 2013 International Symposium on Liquid Metal Processing and Casting, 239–44. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118830857.ch35.
Pełny tekst źródłaPatel, Ashish, David W. Tripp i Daniel Fiore. "Application of a Model for Simulating the Vacuum Arc Remelting Process in Titanium Alloys". W Proceedings of the 2013 International Symposium on Liquid Metal Processing & Casting, 241–44. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48102-9_35.
Pełny tekst źródłaCibula, M., J. Motley, N. Pettinger, D. McCulley i P. King. "Advances in Magnetic Measurements and Externally Applied Magnetic Fields for Vacuum Arc Remelting Process Monitoring and Control". W The Minerals, Metals & Materials Series, 1609–22. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-50349-8_139.
Pełny tekst źródła"Computational Analysis of the Vacuum Arc Remelting (VAR) and Electroslag Remelting (ESR) Processes". W Metals Process Simulation, 196–213. ASM International, 2010. http://dx.doi.org/10.31399/asm.hb.v22b.a0005510.
Pełny tekst źródłaStreszczenia konferencji na temat "Vacuum Arc Remelting (VAR)"
Alam, M. K., K. K. Wong i S. L. Semiatin. "Elasto-Plastic Analysis of Thermal Stress Development During VAR of Ingots". W ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0631.
Pełny tekst źródłaLopez, Luis Felipe, Joseph J. Beaman i Rodney L. Williamson. "A Reduced-Order Model for Dynamic Vacuum Arc Remelting Pool Depth Estimation and Control". W ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control. ASMEDC, 2011. http://dx.doi.org/10.1115/dscc2011-5958.
Pełny tekst źródłaBeaman, Joseph J., Rodney L. Williamson, David K. Melgaard i Jon Hamel. "A Nonlinear Reduced Order Model for Estimation and Control of Vacuum Arc Remelting of Metal Alloys". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79239.
Pełny tekst źródłaZanner, F. J., R. L. Williamson, R. P. Harrison, H. D. Flanders, R. D. Thompson i W. C. Szeto. "Vacuum ARC Remelting of Alloy 718". W Superalloys. TMS, 1989. http://dx.doi.org/10.7449/1989/superalloys_1989_17_32.
Pełny tekst źródłaGrose, S. M. "The Vacuum Arc Remelting of Large Diameter Alloy 706". W Superalloys. TMS, 1994. http://dx.doi.org/10.7449/1994/superalloys_1994_49_53.
Pełny tekst źródłaWilliamson, R. L., i G. J. Shelmidine. "Current Paths During Vacuum Arc Remelting of Alloy 718". W Superalloys. TMS, 2001. http://dx.doi.org/10.7449/2001/superalloys_2001_91_102.
Pełny tekst źródłaPatel, A. D., R. S. Minisandram i D. G. Evans. "Modeling of Vacuum Arc Remelting of Alloy 718 Ingots". W Superalloys. TMS, 2004. http://dx.doi.org/10.7449/2004/superalloys_2004_917_924.
Pełny tekst źródłaWilliamson, R. L., M. E. Schlienger, C. L. Hysinger i J. J. Beaman. "Modern Control Strategies for Vacuum Arc Remelting of Segregation Sensitive Alloys". W Superalloys. TMS, 1997. http://dx.doi.org/10.7449/1997/superalloys_1997_37_46.
Pełny tekst źródłaLiu Xin, Zhang Nailu, Guo Chaoyang i He Li. "Research on arc stability control system for vacuum arc remelting furnace based on fuzzy-PID". W 2014 IEEE Workshop on Electronics, Computer and Applications (IWECA). IEEE, 2014. http://dx.doi.org/10.1109/iweca.2014.6845547.
Pełny tekst źródłaWilliamson, R. L., J. J. Beaman, F. J. Zanner i J. J. DeBarbadillo. "Advancing Alloy 718 Vacuum Arc Remelting Technology Through Developing Model-Based Controls". W Superalloys. TMS, 2005. http://dx.doi.org/10.7449/2005/superalloys_2005_47_56.
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