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Relevant bibliographies by topics / Equiaxed Solidification

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Academic literature on the topic 'Equiaxed Solidification'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

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Journal articles on the topic "Equiaxed Solidification"

1

Grong, Ø., A. K. Dahle, M. I. OnsØien, and L. Arnberg. "Analytical modelling of equiaxed solidification." Acta Materialia 46, no. 14 (1998): 5045–52. http://dx.doi.org/10.1016/s1359-6454(98)00166-9.

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Rieker, C., and D. G. Morris. "Equiaxed microstructure by rapid solidification." Materials Science and Engineering: A 133 (March 1991): 854–58. http://dx.doi.org/10.1016/0921-5093(91)90201-w.

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Du, Wen-Hui, Chang-Rong Li, and Chang-Ling Zhuang. "Effect of Nb addition on the solidification structure of Fe–Mn–C–Al twin-induced plasticity steel." High Temperature Materials and Processes 39, no. 1 (2020): 599–607. http://dx.doi.org/10.1515/htmp-2020-0056.

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AbstractThe solidification microstructure of an Fe–Mn–C–Al high-Mn steel with added Nb was studied by optical microscopy and scanning electron microscopy. The results showed that the size of the columnar and equiaxed grains in the solidified structure of the high-Mn steel without added Nb was large. When Nb was added, the size of the equiaxed and columnar grains in the solidification structure of the high-Mn steel decreased. The twin-induced plasticity in the high-Mn steel with added Nb clearly refined the grain size of the solidified structure and simultaneously increased the equiaxed crystal

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4

McFadden, Shaun, David J. Browne, and Jerzy Banaszek. "Prediction of the Formation of an Equiaxed Zone Ahead of a Columnar Front in Binary Alloy Castings: Indirect and Direct Methods." Materials Science Forum 508 (March 2006): 325–30. http://dx.doi.org/10.4028/www.scientific.net/msf.508.325.

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The as-cast properties of components with a columnar grain structure are very different from those with an equiaxed one. Under certain solidification conditions, zones of both structures can occur in an alloy casting; the boundary between the zones is the columnar-to-equiaxed transition (CET). A front-tracking model of dendritic solidification has been developed, which can predict the nucleation and growth of solid in undercooled liquid during a casting process. The growth process is described by dendrite tip kinetics, and is fully coupled to a fixed-grid control volume model of heat transfer

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Guo, Dongwei, Zibing Hou, Zhiqiang Peng, Qian Liu, and Jianghai Cao. "Quantitative Correlation and Control Strategy for Element Content Fluctuation along Casting Direction in Central Area of Continuous Casting Billet." Metals 11, no. 3 (2021): 452. http://dx.doi.org/10.3390/met11030452.

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The statistical correlation was applied to analyze the specific and quantitative correlation relationship between the solidification structure and central segregation along the casting direction in carbon steel billet. On this basis, the segregation formation mechanism of the solute element and related control strategy were investigated. It is found that the equiaxed crystal zone fluctuation along the casting direction determines the fluctuation degree of central segregation. At the same time, the central segregation at a certain position is mostly affected by the equiaxed crystal zone width a

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Wu, M., Z. Zhang, H. Zhang, A. Ludwig, and A. Kharicha. "Flow-enhanced remelting of settling/floating globular crystals during mixed columnar-equiaxed solidification." IOP Conference Series: Materials Science and Engineering 1281, no. 1 (2023): 012036. http://dx.doi.org/10.1088/1757-899x/1281/1/012036.

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Abstract Previously, the authors have used a mixed columnar-equiaxed solidification model, successfully ‘reproduced’ the solidification benchmark experiments on the Sn-10wt.%Pb alloy under natural/forced convections (travelling magnetic stirring) as performed at SIMAP laboratory [Int. J. Heat Mass Transf. 85 (2015) 438-54]. The current contribution is to address the flow-effect on the remelting of settling/floating crystals during the mixed columnar-equiaxed solidification. The re-melting or growth is controlled by diffusion of solute in the liquid boundary layer. The diffusion length due to t

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Gao, Zhi Guo. "Numerical Analysis of Nucleation and Growth of Stray Grain Formation during Laser Welding Nickel-Based Single-Crystal Superalloy Part II: Solidification Cracking Diminution through Single-Crystallinity Control." Solid State Phenomena 330 (April 12, 2022): 61–70. http://dx.doi.org/10.4028/p-88u0b0.

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The effect of thermo-metallurgical factors, such as heat input and welding configuration, on solidification cracking driving forces nearby dendrite tip, such as solidification temperature range and columnar/equiaxed transition (CET) was thermodynamically and kinetically discussed with aid of comprehensive numerical analysis for multicomponent melt-pool solidification during laser processing under non-equilibrium solidification conditions to better understand problematical solidification cracking phenomena. By using (001)/[100] welding configuration, axisymmetrical distributions of columnar/equ

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Hutt, J. E. C., D. H. StJohn, L. Hogan, and A. K. Dahle. "Equiaxed solidification of Al–Si alloys." Materials Science and Technology 15, no. 5 (1999): 495–500. http://dx.doi.org/10.1179/026708399101506184.

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Pines, Vladimir, Arnon Chait, Marianne Zlatkowski, and Christoph Beckermann. "Equiaxed dendritic solidification in supercooled melts." Journal of Crystal Growth 197, no. 1-2 (1999): 355–63. http://dx.doi.org/10.1016/s0022-0248(98)00901-4.

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Wang, C. Y., S. Ahuja, C. Beckermann, and H. C. de Groh. "Multiparticle interfacial drag in equiaxed solidification." Metallurgical and Materials Transactions B 26, no. 1 (1995): 111–19. http://dx.doi.org/10.1007/bf02648984.

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Dissertations / Theses on the topic "Equiaxed Solidification"

1

Ma, Guojian Carleton University Dissertation Engineering Mechanical. "Modelling equiaxed dendritic solidification." Ottawa, 1990.

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2

Browne, David John. "Modelling columnar and equiaxed growth." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:3d8ae26b-e0b4-4d54-801d-4951705d53aa.

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A novel computer model of the evolution of columnar and equiaxed microstructure during alloy solidification has been developed. A control volume finite difference model of conduction heat transfer is applied to a two-dimensional domain bounded by a relatively cold mould. The initial condition is that of superheated liquid, and nucleation occurs either at the mould wall, leading to columnar dendritic growth, or within the bulk liquid, leading to the growth of equiaxed dendrites. The columnar front or the equiaxed grain boundaries are represented by computationally sharp interfaces, which separa

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Leriche, Nicolas. "Étude de la Transition Colonnaire-Equiaxe dans les lingots et en coulée continue d’acier et influence du mouvement des grains." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0276/document.

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Les coulées industrielles permettent de distinguer deux types de structures : colonnaires et équiaxes. La mise en place de ces structures a des conséquences importantes sur les autres hétérogénéités, particulièrement les macroségrégations chimiques. Le code SOLID, développé à l’Institut Jean Lamour, permet de décrire de manière couplée la convection naturelle du liquide ainsi que la germination, la croissance et le transport des grains équiaxes. Le travail présenté a pour but de proposer une modélisation de l’apparition et de la croissance des structures colonnaires couplées à celles des grain

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Torabi, Rad Mahdi. "Multiphase macroscale models for macrosegregation and columnar to equiaxed transition during alloy solidification." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6654.

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In the field of metal casting, solute composition inhomogeneities at the macroscale are called macrosegregation, and the transition from the elongated grains in the outer portions of a casting to the more rounded grains in the center is termed Columnar to Equiaxed Transition (CET). Simultaneous prediction of macrosegregation and CET is still an important challenge in the field. One of the open questions is the role of melt convection on the CET and the effect of the CET on macrosegregation. A three-phase macroscale model for macrosegregation and CET was developed. The model accounts for numero

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Jiang, Bo. "Solidification behaviour of magnesium alloys." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/8407.

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Magnesium alloys have been extensively used for structural and functional applications due to their low densities. In order to improve the mechanical properties, grain refinement of the microstructures of magnesium alloys has been studied for many years. However, an effective and efficient grain refiner or refinement technique hasn’t been achieved yet, especially for those with aluminium contained. In this study, solution for this problem has been discovered through further understanding of the solidification process, including the potency and the efficiency of nucleation particles, the role o

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Albert, Virginie. "Macroségrégations et mouvement des cristaux équiaxes lors de la solidification d'alliages." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL037N.

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Ce travail s'inscrit dans un programme de modélisation de la solidification et de la macroségrégation incluant le transport des cristaux équiaxes. Dans la première partie de l'étude, nous avons montré que les phénomènes physiques élémentaires à l'origine de la macroségrégation de lingotins Al-Cu de solidification dirigée ascendante ou descendante incluent le mouvement du liquide interdendritique lié à la convection naturelle ainsi que le mouvement des cristaux equiaxes. Dans la seconde partie, nous avons mis en place une expérience de sédimentation/croissance de cristaux equiaxes dans un allia

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Prins, Heinrich Johann. "The effect of autogenous gas tungsten arc welding parameters on the solidification structure of two ferritic stainless steels." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/79303.

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Ferritic stainless steel is typically used in the automotive industry to fabricate welded tube that is plastically deformed for flanging, bending and necking. The effect of welding parameters during autogenous gastungsten arc welding (GTAW) of thin sheet on the weld metal structure and tensile properties were determined. Two grades of ferritic stainless steels, a titanium-containing Grade 441 and a titanium-free molybdenum-containing Grade 436, were used as base metal. Statistical analysis was used to determine the influence of welding parameters on the microstructure of autogenous GTAW welds.

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Villaret, Vincent. "Etude de soudabilité d’un acier inoxydable ferritique (19 % Cr, 2 % Mo, Nb) appliqué aux collecteurs d’échappements." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20261/document.

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L'objectif de ce travail de thèse, est de développer un matériau d'apport et un mode opératoire de soudage associé permettant d'assembler des tôles d'acier K44X pour la fabrication de collecteurs d'échappement automobiles. Les propriétés de l'acier K44X ayant été optimisées pour répondre au mieux aux contraintes de l'application, les conditions de soudage recherchées devront, dans la mesure du possible, éviter de dégrader les caractéristiques de l'acier, en particulier en termes de tenue mécanique à haute température et de résistance à l'oxydation et à la fatigue thermique. Ce mémoire est divi

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Júnior, Francisco Lameiras. "Efeito da nucleação de grãos nas previsões do modelo multifásico para a solidificação equiaxial." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-22072007-173821/.

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Um modelo matemático multifásico para a solidificação equiaxial de ligas binárias capaz de prever o efeito de taxa de resfriamento e da concentração de soluto no tamanho médio final de grãos foi proposto no presente trabalho. O modelo matemático foi desenvolvido através do conceito de envelope envolvendo os grãos, utilizando as equações de conservação de energia, massa e espécies químicas. O modelo de nucleação utilizado possibilita que novos núcleos possam surgir durante todo o período de resfriamento. As equações diferenciais foram obtidas através de uma média volumétrica das equações de con

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Melendez, Ramirez Antonio Jose. "Experimental investigation of free dendritic growth of succinonitrile-acetone alloys." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/407.

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Measurements are carried out for dendrite tip growth of succinonitrile-acetone alloys solidifying freely in an undercooled melt. The current experimental investigation is conducted using the equiaxed dendritic solidification experiment (EDSE). This setup allows for precise measurements of the dendrite tip velocity, radius and shape for a range of undercoolings and solute concentrations. The collected data are compared to available theories of free dendritic growth, such as the Lipton-Glicksman-Kurz and Li-Beckermann models. It is found that for dilute succinonitrile-acetone alloys, the measure

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Books on the topic "Equiaxed Solidification"

1

Beckermann, Christoph. Transport phenomena during equiaxed solidification of alloys: Final technical report, NCC3-290. National Aeronautics and Space Administration, 1997.

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2

M, Stefanescu Doru, and United States. National Aeronautics and Space Administration., eds. Micro and macro segregation in alloys solidifying with equiaxed morphology: NCC8-57, final report. National Aeronautics and Space Administration, 1996.

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Book chapters on the topic "Equiaxed Solidification"

1

Wu, M., A. Ludwig, and A. Bührig-Polaczek. "Grain Sedimentation and Melt Convection Phenomena During Globular Equiaxed Solidification." In Solidification and Crystallization. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603506.ch23.

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Steinbach, Ingo, and Hesham Salama. "Stress–Strain and Fluid Flow." In Lectures on Phase Field. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-21171-3_7.

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AbstractIn this chapter first a multi-phase-field model considering transformation strain and elastic energy is developed. It utilizes the expansion into multiple phases of the multi-phase-field model. In particular, the treatment of the diffuse interface region as an effective medium is discussed in the context of homogenization theory. The model is applied to martensitic transformation within finite strain framework. In the second part of the lecture coupling for solute transport by melt flow is discussed. The model is applied to equiaxed dendritic solidification of MgAl in a shear flow.

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Eck, Sven, J. Mogeritsch, and A. Ludwig. "Experimental Observation of Convection during Equiaxed Solidification of Transparent Alloys." In Materials Science Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-991-1.157.

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Martorano, Marcelo A., Juan M. R. Arango, and Franco A. L. Ramunno. "Implementation and Validation of a Multiphase Multigrain Model of Equiaxed Solidification." In TMS 2014: 143rd Annual Meeting & Exhibition. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48237-8_36.

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Balliel, Martin, Dexin Ma, and Fredy Hediger. "Solidification & Grain Structure Simulation of an Equiaxed Superalloy Investment Casting." In Intermetallics and Superalloys. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607285.ch20.

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Martorano, Marcelo A., Juan M. R. Arango, and Franco A. L. Ramunno. "Implementation and Validation of a Multiphase Multigrain Model of Equiaxed Solidification." In TMS 2014 Supplemental Proceedings. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118889879.ch36.

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Mirihanage, Wajira U., and David J. Browne. "Effects of Gravity on the Columnar to Equiaxed Transition in Directional Solidification." In Shape Casting. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062050.ch16.

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Ares, Alicia E., and Carlos E. Schvezov. "Columnar-to-Equiaxed Transition in Zn-27wt.%Al Alloys: A Comparation between Vertical and Horizontal Directional Solidifications." In Advances in the Science and Engineering of Casting Solidification. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093367.ch12.

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Ares, Alicia E., and Carlos E. Schvezov. "Columnar-to-Equiaxed Transition in zn-27wt.%al Alloys: A Comparation Between Vertical and Horizontal Directional Solidifications." In Advances in the Science and Engineering of Casting Solidification. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48117-3_12.

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Park, Joo Hyun, Jun Seok Park, and Changhee Lee. "Formation of Equiaxed Crystals by Complex Inclusions during Solidification of Advanced High Strength Steel." In PRICM. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118792148.ch82.

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Conference papers on the topic "Equiaxed Solidification"

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Laux, Harald, and O̸yvind Nielsen. "Multiphase Flow Modeling of Equiaxed Dendritic Solidification With Melt Convection." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32884.

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A Computational Fluid Dynamics model for simulation of equiaxed dendritic solidification with melt convection and crystal transport is developed. This multi-scale multiphase model accounts for transport phenomena on the macro- and the microscales of a solidifying alloy. It predicts nucleation and growth of equiaxed dendrites from a melt, and their transport in the melt. Thermo-solutal convection and remelting of crystals are also included in the multiphase model that is based on the work of Wang and Beckermann (Metall. Mater. Trans. 27A, 1996, p. 2754). To verify the modeling results compariso

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Beckermann, C., R. Feler, T. Irwin, H. Muller-Spath, and C. Wang. "Visualization of sedimentation and thermo-solutal convection during equiaxed alloy solidification." In 32nd Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-570.

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Cao, Guoqiang, Bo Zhang, Gang Li, and Wenya Peng. "Effect of shell temperature on solidification organization of equiaxed crystal blade." In 22nd International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2023. http://dx.doi.org/10.22616/erdev.2023.22.tf219.

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The investigation was conducted into the effects of different shell preheating temperatures (1100 °C, 1150 °C, and 1180 °C) on the organization of solidification of isometric crystalline blades made for an aero-engine. The experimental results show that with the increase of shell temperature, the dendrite spacing and dendrite robustness gradually increase, while the area between dendrites gradually increases. The size of the eutectic gradually increases as the shell temperature rises, and there is no obvious regularity in the eutectic content. The size and content of carbide show a trend of de

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Cao, Guoqiang, Yuqiao Shen, Gang Li, and Wenya Peng. "Effect of shell temperature in thermal control solidification process on microstructure and stress rupture property of cast equiaxed superalloy." In 22nd International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2023. http://dx.doi.org/10.22616/erdev.2023.22.tf220.

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Cast equiaxed superalloy is commonly used in the manufacture of engine turbine blades and complex structural castings due to its excellent casting properties and comprehensive mechanical properties. The more adaptable thermal control solidification process is usually used to refine the equiaxed crystal structure. In this paper, the microstructure and fracture surface of this alloy after solid solution were observed and characterized by means of OM, SEM, and EDS, and the effects of thermally controlled solidification processes with different shell temperatures on the microstructure and stress f

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Nastac, Laurentiu, and Daojie Zhang. "3D Stochastic Modeling of Columnar-to-Equiaxed Transition During the Solidification of Alloy 718." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39761.

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An efficient three-dimensional (3D) stochastic model for simulating the evolution of dendritic crystals during the solidification of alloys was developed. The model includes time-dependent computations for temperature distribution, solute redistribution in the liquid and solid phases, curvature, and growth anisotropy. The 3D model can run on PCs with reasonable amount of RAM and CPU time and therefore no parallel computations are needed. 3D mesoscopic computations at the dendrite tip length scale were performed in this study to simulate the formation of the columnar-to-equiaxed transition in a

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Wołczyn´ski, Waldemar S., Edward Guzik, Wojciech Wajda, and Bogusz Kania. "Columnar → Equiaxed Structure Transition in Solidifying Rolls." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-23048.

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As the first step of simulation, a temperature field for solidifying cast steel and cast iron roll was created. The convection in the liquid is not comprised since in the first approximation, the convection does not influence the analysed occurrence of the C → E (columnar to equiaxed grains) transition in the roll. The obtained temperature field allows to study the dynamics of its behavior observed in the middle of the mould thickness. This midpoint of the mould thickness was treated as an operating point for the C → E transition. A full accumulation of the heat in the mould was postulated for

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Gao, Yang, Yan Zhao, Cheng-qi Sun, D. M. Yang, and Jianyi Gao. "Fully Nano-Equiaxed-Structured Thermal Barrier Coating Deposited Using Very-Low-Pressure Plasma Spray." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0427.

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Abstract A novel fully nano-equiaxed-structured thermal insulation Y2O3-stabilised ZrO2 (YSZ) coating was first successfully deposited using very-low-pressure plasma spray (VLPPS) and the agglomerates feedstock from nanometer-sized powders. The microstructure of fully nano-equiaxed-structured coating is different from that of a “bimodal microstructure”, which is currently the dominant nanostructured coating. This desirable structure in the new TBCs appears to be responsible for their improved thermal cycling lifetimes and reduced thermal conductivity relative to those of conventional plasma-sp

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Acharya, Ranadip, Rohan Bansal, Justin J. Gambone, and Suman Das. "Modeling of Solidification and Microstructure Evolution in the Scanning Laser Epitaxy (SLE) Process for Additive Manufacturing With Nickel-Base Superalloy Powders." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66807.

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This paper investigates effects of natural and Marangoni convection on the resultant solidification microstructure in the scanning laser epitaxy (SLE) process. SLE is a laser-based additive manufacturing process that is being developed at the Georgia Institute of Technology for the additive manufacturing of nickel-base superalloys components with equiaxed, directionally-solidified or single-crystal microstructures through the laser melting of alloy powders onto superalloy substrates. A combined thermal and fluid flow model of the system simulates a heat source moving over a powder bed and dyna

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Browne, David J., Jerzy Banaszek, and John D. Hunt. "Front Tracking Method on a Fixed Grid versus Enthalpy Approach in Modelling of Binary Alloy Solidification." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32871.

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A novel front tracking technique on a fixed Cartesian grid, based on the kinetics of dendritic growth, is discussed. It is used to predict the influence of both alloy composition and convective heat transfer coefficient on the size of the undercooled liquid zone in front of columnar dendrite tips during solidification of Al-Cu alloys driven by conduction in a square mould. The model is compared with the enthalpy approach showing its superiority in the detection of the undercooled zone and, thus, in potentially modelling of columnar/equiaxed grain structures. The effect of natural thermal conve

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DeZego, Shawn E., W. Kinzy Jones, Z. F. Dong, and M. A. Ebadian. "Experimental Study of the Effects of Thermal and Solutal Convections in the Continuous Cast of a Binary Mixture." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0084.

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Abstract An experimental study of the solidification process for the continuous cast of a binary NH4CI-H2O solution with varying inlet temperature and composition has been performed. Thermal and solutal density gradients have been found to strongly affect flow in the liquid region and are mainly responsible for the redistribution of species on the macroscopic scale. Flow visualizations have shown that dense solute-rich solution, rejected from the mushy zone, was redistributed into the upper regions of the liquid melt during cases of hypoeutectic initial concentrations. Localized remelting and

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