Relevant bibliographies by topics / Aluminum castings. Metals

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Aluminum castings. Metals'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Aluminum castings. Metals"

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Kovtunov, A. I., D. A. Semistenov, Yu Yu Khokhlov, and S. V. Myamin. "The research of the processes of formation of porous non-ferrous metals." Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta, no. 2 (2021): 9–17. http://dx.doi.org/10.18323/2073-5073-2021-2-9-17.

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Foamed metals are promising materials with a unique combination of mechanical and operational properties: low specific gravity, low thermal conductivity, ability to absorb acoustic and electromagnetic vibrations, and the ability to deform under a constant load. Currently, the most used methods for producing foamed aluminum and foamed magnesium are methods based on mixing gas or porophore into molten aluminum and forming a porous structure during the solidification of the aluminum melt. An alternative to this technology is the formation of a porous structure through the use of soluble granules that pre-fill the mold and after impregnating the granules with molten metal and solidifying the castings, they are leached. The work aims to determine the influence of casting modes and the size of granules on the depth of impregnation of granular filling with metal melt during the formation of porous aluminum castings. The authors proposed the technique for calculating the depth of impregnation of granular filling when producing castings of porous non-ferrous metals based on the calculation of melt cooling when moving along the thin-walled channel. The calculations made it possible to determine the depth of impregnation and establish the allowable wall thickness of the casting of porous aluminum, depending on the size of the granules used, the speed of the melt in a form, the mold temperature, and the temperature of molten aluminum. The study identified that to increase the depth of impregnation and obtain porous aluminum castings with thinner walls, it is advisable to increase the diameter of the salt granules and not the temperature and hydrodynamic modes of casting. The authors carried out calculations and identified the influence of the casting regimes and the diameter of the granules on the depth of mold impregnation to obtain porous castings from promising magnesium alloys.
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MIZUNO, Shinya. "New technologies of aluminum castings. New casting process." Journal of Japan Institute of Light Metals 47, no. 11 (1997): 580–86. http://dx.doi.org/10.2464/jilm.47.580.

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Tsuji, Makoto. "Automation of Die Casting." International Journal of Automation Technology 2, no. 4 (July 5, 2008): 285–88. http://dx.doi.org/10.20965/ijat.2008.p0285.

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Die-casting is a process to manufacture high-accuracy castings at high productivity using nonferrous metals such as zinc, copper, aluminum and magnesium. Die-casting includes many processes such as lubricant spray to the die, injection of molten metal, taking off the casting from the die, and trimming of unnecessary parts. Nowadays all these processes of die casing can be conducted by fully automated die-casting machines. TOSHIBA MACHINE CO., LTD has taken the lead in development of die-casting machines. Here we will be introducing the common process flow and details of some of major components of the die-casting equipment.
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Opsal Bakke, Aina, Arne Nordmark, Lars Arnberg, and Yanjun Li. "Interfacial microstructure formation in A356/steel compound castings using metal coating." MATEC Web of Conferences 326 (2020): 06005. http://dx.doi.org/10.1051/matecconf/202032606005.

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Compound castings between aluminum and steel have great potential for applications in the automotive industry. However, due to large differences in thermal and mechanical properties between steel and aluminum, and the formation of stable aluminum oxides at the interface, it is difficult to form high strength metallic bonding between the two metals. In this work, A356/steel compound castings were produced through a gravity casting process. Various metal coatings, including galvanizing, aluminizing and brass-coating, were applied on the steel inserts to ensure that the A356 aluminum melt could react sufficiently with an oxide-free steel surface, resulting in a high-quality metallurgical bond. The reaction layer formed between the alloys was investigated using Optical Microscopy (OM), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). In addition, Vickers Micro-hardness was measured across the aluminum-steel interface. Results showed that metallurgical bonding could be achieved with all three coatings. However, for the brass-coated components only local bonding areas were found. In the aluminized and galvanized components, thick reaction layers consisting of binary Al-Fe and ternary Al-Fe-Si phases formed in the aluminum-steel interface. Between the A356 aluminum and aluminized layer, nearly no reaction layer formed. The mechanism for the formation of the various intermetallic phases at the reaction layers are discussed.
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Nikitin, K. V., A. V. Sokolov, V. I. Nikitin, and N. V. D’yachkov. "THE USE OF ALUMINUM SLAG RECYCLING PRODUCTS IN INVESTMENT CASTING TECHNOLOGIES." Izvestiya Vuzov Tsvetnaya Metallurgiya (Proceedings of Higher Schools Nonferrous Metallurgy, no. 6 (December 14, 2018): 58–71. http://dx.doi.org/10.17073/0021-3438-2018-6-58-71.

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The studies of fractional, chemical and phase compositions of aluminum-containing slags of different origin found that slags are multi-component systems consisting of metal and non-metal parts. The non-metal part contains water-soluble and water-insoluble components. A practical scheme for recycling aluminum-containing slags was proposed in order to isolate the water-insoluble component to be further used a secondary refractory dusting material. It was found that the secondary refractory dusting material has a positive effect on the quality of refractory ceramic molds in investment casting and the surface finish of experimental aluminum castings. This material improves the strength of refractory ceramic molds by 9 times in comparison with silica sand molds and increases gas permeability by 15 % to 33 % in comparison with fused alumina and silica sand molds, respectively. The study covers the processes used to produce refractory ceramic molds based on the secondary refractory dusting material. The mechanism of interaction between dusting material particles and suspension is theoretically justified in terms of colloid chemistry. Negatively charged aluminum hydroxide micelles appear when ceramic mold layers are formed using the secondary refractory dusting material. Interaction between differently charged Al(OH)3 and SiO2 micelles makes secondary refractory dusting material particles come in close contact with each other. The theoretically justified processes of ceramic mold layer formation with the secondary refractory dusting material make it possible to explain the reduction in the surface roughness of castings made of AK9ch aluminum casting alloy using investment casting by 3.7 times compared with standard production processes.
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Górny, M., and M. Kawalec. "Role of Titanium in Thin Wall Vermicular Graphite Iron Castings Production." Archives of Foundry Engineering 13, no. 2 (June 1, 2013): 25–28. http://dx.doi.org/10.2478/afe-2013-0030.

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Abstract In this paper the effects of titanium addition in an amount up to 0.13 wt.% have been investigated to determine their effect on the microstructure and mechanical properties of Thin Wall Vermicular Graphite Iron Castings (TWVGI). The study was performed for thinwalled iron castings with 3-5 mm wall thickness and for the reference casting with 13 mm. Microstructural changes were evaluated by analyzing quantitative data sets obtained by image analyzer and also using scanning electron microscope (SEM). Metallographic examinations show that in thin-walled castings there is a significant impact of titanium addition to vermicular graphite formation. Thinwalled castings with vermicular graphite have a homogeneous structure, free of chills, and good mechanical properties. It may predispose them as a potential use as substitutes for aluminum alloy castings in diverse applications.
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Dolata, A. J. "Centrifugal Castings Locally Reinforced with Porous AL2O3 Preform." Archives of Metallurgy and Materials 59, no. 1 (March 1, 2014): 345–48. http://dx.doi.org/10.2478/amm-2014-0057.

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Abstract The main objective of presented researches were tests of infiltration of the porous ceramic preforms at the pressure in centrifugal casting process. Make an assumption that the porous preform will be create the local reinforcement layer in specific area of the casting. For investigations the alumina porous ceramic preforms were applied (Al2O3). The pressure to infiltrate molten aluminum alloy into ceramic preforms was generated by centrifugal force. The structure of composites was examined by light and electron microscope. The investigations of composites microstructure exhibited high degree of infiltration of spherical macropores in Al2O3 ceramic preforms by the molten aluminium alloy. On the basis of structural studies has been shown that centrifugal force is effective as a driving force for the infiltration of porous preforms.
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Wyatt, J. E., J. T. Berry, and A. R. Williams. "Residual stresses in aluminum castings." Journal of Materials Processing Technology 191, no. 1-3 (August 2007): 170–73. http://dx.doi.org/10.1016/j.jmatprotec.2007.03.018.

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Žbontar, Matic, Mitja Petrič, and Primož Mrvar. "The Influence of Cooling Rate on Microstructure and Mechanical Properties of AlSi9Cu3." Metals 11, no. 2 (January 21, 2021): 186. http://dx.doi.org/10.3390/met11020186.

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The aim of this study was to determine the correlation between the size and the distribution of microstructural constituents and their cooling rate, as well as the correlation between the mechanical properties and the cooling rate of AlSi9Cu3 aluminum alloy when cast in high-pressure die casting (HPDC) conditions. In other words, the ultimate goal of the research was to determine the mechanical properties for a casting at different cooling rates. Castings with different wall thicknesses were chosen, and different cooling rates were assumed for each one. Castings from industrial technological practice were systematically chosen, and probes were extracted from those castings for the characterization of their mechanical properties. Special non-standard cylinders were created on which compressive tests were carried out. The uniqueness of this research lies in the fact that the diameters of the designed cylinders were in direct correlation to the actual wall thickness of the castings. This is important because the solidification of metal in the die cavity is complex, in that the cooling rates are higher on the surface of the casting than in the center. Local in-casting cooling rates were determined using numerical simulations. It was discovered that with increasing cooling rates from 60 K/s to 125 K/s the values for strength at 5% deformation increased on average from 261 MPa to 335 MPa.
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Fraś, E., M. Górny, and W. Kapturkiewicz. "Thin Wall Ductile Iron Castings: Technological Aspects." Archives of Foundry Engineering 13, no. 1 (March 1, 2013): 23–28. http://dx.doi.org/10.2478/afe-2013-0005.

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Abstract The paper discusses the reasons for the current trend of substituting ductile iron castings by aluminum alloys castings. However, it has been shown that ductile iron is superior to aluminum alloys in many applications. In particular it has been demonstrated that is possible to produce thin wall wheel rim made of ductile iron without the development of chills, cold laps or misruns. In addition it has been shown that thin wall wheel rim made of ductile iron can have the same weight, and better mechanical properties, than their substitutes made of aluminum alloys.
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Dissertations / Theses on the topic "Aluminum castings. Metals"

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Warke, Virendra S. "Removal of Hydrogen and Solid Particles from Molten Aluminum Alloys in the Rotating Impeller Degasser: Mathematical Models and Computer Simulations." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0626103-111317.

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Saha, Deepak. "Novel Processing Methods and Mechanisms to Control the Cast Microstructure in Al Based Alloys - 390 and Wrought Alloys." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-041405-150300/.

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Ma, Shuhui. "A methodology to predict the effects of quench rates on mechanical properties of cast aluminum alloys." Link to electronic dissertation, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-050106-174639/.

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Dissertation (Ph.D.)--Worcester Polytechnic Institute.
Keywords: Time-Temperature-Property curve, Jominy End Quench, ANOVA analysis. Quench Factor Analysis, Taguchi design, Polymer quench, Cast Al-Si-Mg alloys, Quenching, Heat treatment. Includes bibliographical references (p.115-117).
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Lados, Diana Aida. "Fatigue crack growth mechanisms in Al-Si-Mg alloys." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0204104-125758.

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Thesis (Ph. D.)--Worcester Polytechnic Institute.
Keywords: Microstructure; Elastic-Plastic Fracture Mechanics; Crack closure; A356; J-integral; Conventionally cast and SSM Al-Si-Mg alloys; Residual stress; Heat treatment; Fatigue crack growth mechanisms; Threshold stress intensity factor; Plastic zone; Paris law; Fracture toughness; Roughness. Includes bibliographical references.
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Dewhirst, Brian A. "Optimization of the heat treatment of semi solid processed A356 aluminum alloy." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-111705-111503/.

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Thesis (M.S.)--Worcester Polytechnic Institute.
Keywords: microstructure; casting; Fluid Bed; Quality Index; Aluminum; A356; heat treatment; SSM; Semi Solid Metal Includes bibliographical references. (p.105-106)
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Forté, Martin. "Modélisation de l'écoulement de l'aluminium semi-solide dans le moulage sous pression /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2006. http://theses.uqac.ca.

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Thèse (M.Eng.) -- Université du Québec à Chicoutimi, 2006.
La p. de t. porte en outre: Mémoire présenté à l'Université du Québec à Chicoutimi comme exigence partielle de la maîtrise en génie. CaQCU Bibliogr.: f. [142-145]. Document électronique également accessible en format PDF. CaQCU
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Soderhjelm, Carl. "Multi-Material Metal Casting: Metallurgically Bonding Aluminum to Ferrous Inserts." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/174.

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Properties of cast aluminum components can be improved by strategically placing ferrous inserts to locally improve properties such as wear resistance and stiffness. A cost-effective production method is to cast-in the insert using the solidification of the molten aluminum as a joining method. Metallurgically bonding between the metals could potentially improve both load and heat transfer across the interface. The metallurgical bond between the steel and the aluminum has to be strong enough to withstand stresses related to solidification, residual stresses, thermal expansion stresses, and all other stresses coupled with the use of the component. Formation of a continuous defect free bond is inhibited by the wetting behavior of aluminum and is governed by a diffusion process which requires both energy and time. Due to the diffusional nature of the bond growth in combination with post manufacturing heat treatments defects such as Kirkendall voids can form. The effect of aluminum alloying elements during liquid-solid bond formation in regards to microstructural changes and growth kinetics has been described. A timeframe for defect formation during heat treatments as well as microstructural changes has been established. The effect of low melting point coatings (zinc and tin) on the nucleation of the metallurgical bond has been studied as well the use of a titanium coating for microstructural modification. A set of guidelines for successful metallurgical bonding during multi- material metal casting has also been constructed.
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Turkyilmaz, Gokhan. "Processing And Assessment Of Aluminum Ceramic Fiber Reinforced Aluminum Metal Matrix Composite Parts For Automotive And Defense Applications." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610751/index.pdf.

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The aim of this study was to produce partially reinforced aluminum metal matrix composite components by insertion casting technique and to determine the effects of silicon content, fiber vol% and infiltration temperature on the mechanical properties of inserts, which were the local reinforcement parts of the components. Silicon content of alloys was selected as 7 wt% and 10 wt%. The reinforcement material, i.e. Saffil fiber preforms, had three different fiber vol% of 20, 25 and 30 vol% respectively. The infiltration temperatures of composite specimens were fixed as 750 °
C and 800 °
C. In the first part of the thesis, physical and mechanical properties of composite specimens were determined according to the parameters of silicon content of the matrix alloy, infiltration temperature and vol% of the reinforcement phase. X-ray diffraction examination of fibers resulted as the fibers mainly composed of deltaalumina fibers and scanning electron microscopy analyses showed that fibers had planar isotropic condition for infiltration. Microstructural examination of composite specimens showed that appropriate fiber/matrix interface was created together with small amount of micro-porosities. Bending tests of the composites showed that as fiber vol% increases flexural strength of the composite increases. The highest strength obtained was 880.52 MPa from AlSi10Mg0.8 matrix alloy reinforced with 30 vol% Saffil fibers and infiltrated at 750 °
C. Hardness values were also increased by addition of Saffil fibers and the highest value was obtained as 191 HB from vertical to the fiber orientation of AlSi10Mg0.8 matrix alloy reinforced with 30 vol% Saffil fibers. Density measurement revealed that microporosities existed in the microstructure and the highest difference between the theoretical values and experimental values were observed in the composites of 30 vol% Saffil fiber reinforced ones for both AlSi7Mg0.8 and AlSi10Mg0.8 matrix alloys. In the second part of the experiments, insertion casting operation was performed. At casting temperature of 750 °
C, a good interface/component interface was obtained. Image analyses were also showed that there had been no significant fiber damage between the insert and the component.
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Hampton, J. Holly D. "Mechanics of slip casting and filter pressing of alumina ceramics." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63859.

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Rivero, Paz Ive. "The effect of key microstructure features on the machining of an aluminum-silicon casting alloy /." View online, 2010. http://ecommons.txstate.edu/engttad/1.

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Books on the topic "Aluminum castings. Metals"

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Shape Casting Symposium (4th 2011 San Diego, Calif.). Shape casting: 4th International Symposium, 2011, in honor of Prof. John T. Berry : proceedings of a symposium sponsored by the Aluminum Committee of the Light Metals Division and the Solidification Committee of the Materials Processing & Manufacturing Division of TMS (The minerals, Metals & Materials Society), held during the TMS 2011 Annual Meeting & Exhibition, San Diego, California, USA, February 27-March 3, 2011. Hoboken, N.J: John Wiley & Sons Inc. [for] TMS, 2011.

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Materials, Solutions Conference (2002 Columbus Ohio). Advances in aluminum casting technology II: Proceedings from Materials Solutions Conference 2002, the 2nd International Aluminum Casting Technology Symposium, 7-9 October 2002, Columbus, Ohio. Materials Park, OH: ASM International, 2002.

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Association, Aluminum. Standards for Aluminum sand and permanent mold castings. Washington, DC: Aluminum Association, 1992.

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The potential for cost and weight reduction in transport applications through the use of heat treated aluminum high pressure diecastings. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Gelder, Andrew. Lithium-aluminium casting alloys and their associated metal-mould reactions. Birmingham: Aston University. Department of Chemical Engineering and Applied Chemistry, 1992.

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Australasian Asian Pacific Conference on Aluminum Cast House Technology (6th 1999 Sydney, Australia). Aluminium cast house technology: Sixth Australian Asian Pacific Conference [on] Aluminium Cast House Technology : held during 26-29 July, 1999 at the Novotel Brighton Beach, Sydney, Australia. Warrendale, Pennsylvania: Minerals, Metals & Materials Society, 1999.

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International Symposium on Quality and Process Control in the Reduction and Casting of Aluminum and Other Light Metals (1987 Winnipeg, Man.). Proceedings of the International Symposium on Quality and Process Control in the Reduction and Casting of Alumninum and Other Light Metals, Winnipeg, Canada, August 23-26, 1987. New York: Pergamon Press, 1987.

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Australasian Asian Pacific Conference on Aluminium Cast House Technology (8th 2003 Brisbane, Australia). Aluminium cast house technology: Eighth Australasian Conference [on] Aluminium Cast House Technology : this International Conference was supported by the Department of Chemical Engineering at the University of Melbourne, and was held during 14-17 September, 2003, at the Sheraton Hotel & Towers, Brisbane, Australia. Warrendale, Pa: Minerals, Metals & Materials Society, 2003.

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Campbell, John, Murat Tiryakioglu, and MATERIALS SOLUTIONS CONFERENCE. Advances in Aluminum Casting Technology 11: Proceedings of the Secc. ASM International, 2002.

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Kim, Seong-Han. Development of a novel casting technique for the production of aluminium metal matrix (MMC) castings. 1994.

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Book chapters on the topic "Aluminum castings. Metals"

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Yao, Lu, Steve Cockcroft, Daan Maijer, Jindong Zhu, and Carl Reilly. "Study of Microporosity Formation under Different Pouring Conditions in A356 Aluminum Alloy Castings." In Light Metals 2011, 783–89. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118061992.ch135.

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Yao, Lu, Steve Cockcroft, Daan Maijer, Jindong Zhu, and Carl Reilly. "Study of Microporosity Formation under Different Pouring Conditions in A356 Aluminum Alloy Castings." In Light Metals 2011, 783–89. Cham: Springer International Publishing, 2011. http://dx.doi.org/10.1007/978-3-319-48160-9_135.

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Guthrie, Roderick, and Mihaiela Isac. "Horizontal Single Belt Casting of Aluminum Sheet Alloys." In Light Metals 2019, 1123–30. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_137.

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Weiss, David, Orlando Rios, Zachary Sims, Scott McCall, and Ryan Ott. "Casting Characteristics of High Cerium Content Aluminum Alloys." In Light Metals 2017, 205–11. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_28.

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Dieffenbach, R. P. "Practical Problems in Casting Aluminum DC Ingots." In Essential Readings in Light Metals, 705–9. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118647783.ch88.

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Dieffenbach, R. P. "Practical Problems in Casting Aluminum D.C. Ingot." In Essential Readings in Light Metals, 707–9. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48228-6_88.

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Rosso, Mario, Silvia Lombardo, and Federico Gobber. "Sequential Gravity Casting in Functionally Graded Aluminum Alloys Development." In Light Metals 2017, 877–83. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_106.

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Fezi, Kyle, John Coleman, and Matthew J. M. Krane. "Macrosegregation during Direct Chill Casting of Aluminum Alloy 7050." In Light Metals 2015, 871–75. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093435.ch146.

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Fezi, Kyle, John Coleman, and Matthew J. M. Krane. "Macrosegregation during Direct Chill Casting of Aluminum Alloy 7050." In Light Metals 2015, 871–75. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48248-4_146.

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Goutière, Vincent, Martin Fortier, and Claude Dupuis. "Aluminium Casting Furnace Energy Efficiency: Recent Improvements in Rio Tinto Aluminium Casthouses." In Light Metals 2016, 741–48. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274780.ch125.

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Conference papers on the topic "Aluminum castings. Metals"

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PEKARČÍKOVÁ, Miriam, Peter TREBUŇA, and Marek KLIMENT. "Application of simulation tools in the process of casting and processing of aluminium castings." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.995.

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Bakhtiyarov, Sayavur I., Ruel A. Overfelt, and Johnathon Capps. "Cooling Rate Studies in Aluminum Counter Gravity Lost Foam Casting." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33930.

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In this paper we present the results of the experimental study of the liquid metal front dynamics during the gravity pouring and the vacuum assisted counter-gravity lost foam casting techniques. The cooling rates of the castings produced by both techniques are compared.
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KŘIVSKÁ, Barbora, Michaela ŠLAPÁKOVÁ, Olexander GRYDIN, and Miroslav CIESLAR. "Aluminum-steel clad material prepared by twin-roll casting." In METAL 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/metal.2020.3595.

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SHURKIN, Pavel, Torgom AKOPYAN, and Askar MUSIN. "Promising casting aluminum alloys without requirement for heat treatment." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.742.

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PIĄTKOWSKI, Jarosław, Paweł GRADOŃ, and Martyna LACHOWSKA. "Solidification analysis of Aluminum-based medium entropy casting alloy." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.744.

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SUSLU, Yekta Berk, Mehmet Sirac ACAR, Muammer MUTLU, and Ozgul KELES. "SEMI-SOLID ALUMINUM DIE CASTING PROCESS DESIGN FOR PREVENTING DEFECTS: POROSITY." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.753.

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Christy, John Victor, Abdel-Hamid I. Mourad, and Ramanathan Arunachalam. "Mechanical and Tribological Evaluation of Aluminum Metal Matrix Composite Pipes Fabricated by Gravity and Squeeze Stir Casting." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93857.

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Abstract Aluminum metal matrix composites (MMC) find many industrial applications due to its high strength, zero corrosion, light weight and durability. In this work, gravity stir casting and squeeze stir casting were used to produce MMC solid rods of length 21cm. LM25 grade, from scrap alloy wheel of car, was used as matrix and Alumina was added as reinforcements to improve the composite properties. The performed microstructure analysis showed a greater percentage of porosity for gravity casted samples. Brinell hardness tests recorded 61 and 56 for squeeze and gravity stir casting respectively. The analysis was further strengthened by conducting tensile test, compression test, abrasion and erosive wear tests on the casted pipe sections. Optical Microscopy images of squeeze casted Al MMC’s shows a homogenous and a condensed LM25 matrix with alumina reinforcements even at high abrasion rates. Squeeze casted samples exhibited higher hardness, tensile and compression strengths and wear resistance by keeping stirring time, and stirring speed constant. Squeeze stir casting was suggested for the production of Aluminum MMC pipes.
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8

Cook, Daniel P., Sachin S. Deshmukh, and David P. Carey. "Modeling Permanent Mold Casting of Aluminum." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42409.

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Abstract:
Modeling the complex, coupled fluid flow, heat transfer and solidification phenomena taking place in metal casting is a challenging task. The quality of any metal casting depends on many parameters such as the type of mould, rate of filling, and rate of solidification. Optimization of these operational parameters is very important in reducing casting defects such as oxide inclusions and porosity. This paper addresses the first steps in validating a computational fluid dynamics (CFD) model of permanent mold casting of aluminum. A mathematical model of the casting system has been developed using the commercial CFD package StarCD. A physical model of the system has been used to validate the mold filling phenomena in the process. Comparison of the results from these models will be presented.
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9

Weiss, David. "Design of Aluminum Metal Matrix Components for Casting." In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-1689.

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10

Mun, Jiwon, Matthew Busse, Jaehyung Ju, and James Thurman. "Multilevel Metal Flow-Fill Analysis of Centrifugal Casting for Indirect Additive Manufacturing of Lattice Structures." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52270.

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The centrifugal casting is a classical manufacturing method and it has been widely studied. However, when it comes to manufacture thin walled lattice materials with complex three-dimensional meso-structures, a multiscale flow-fill analysis may be needed for macro-filling at the sprue system and micro-filling at lattice structures. On the micro-filing analysis for a thin walled lattice structure, the surface tension of molten metal appears to be an important factor. On the other hand, flow inertia may affect the flow-filling process more than the surface tension of molten metal does. Our hypothesis is that there exist a range of ratios of cell wall thickness to length that are primarily affected by surface tension or density. From comparison with two different molten metals — aluminum and copper alloys, we can estimate the characteristic of flow, which will be of benefit when designing lattice structures and selecting materials for the manufacturing process. The objective of this study is to test the hypothesis by constructing an analytical model on flow filling of molten metals (aluminum alloy and copper alloy) associated with manufacturing lattice structures. The Naiver-Stokes equation with surface tension is considered for modeling of the flow of molten metal along the micro-channel of lattice structures and is numerically implemented with MATLAB. Temperature dependent properties of the liquid metals; e.g., density, viscosity, and conductivity, are considered for building the analytical model. Numerical simulations with a commercial code, ANSYS are conducted using a user defined function. Experimental validation is followed to manufacture a cubic truss lattice structure with a varying wall thickness; 0.5–1mm. Two molten metals — aluminum alloy and copper alloy are used for filling the mold at the centrifugal casting system. The mold is prepared by removing sacrificial lattice patterns made by a polyjet 3D printer. The preliminary result shows that the final lattice structures with an aluminum alloy through the 3D printing of sacrificial pattern followed by centrifugal casting have relatively good flow filling property at thin wall thickness (∼0.5mm) due to low surface tension of aluminum alloy. On the other hand, the high surface tension of a copper alloy prevents flow-fill to micro-channel mold cavity, resulting in early solidification. The indirect additive manufacturing based casting shows an excellent surface quality, which can be used for manufacturing cellular structures. A coupled flow and heat transfer of molten metal successfully simulate flow-fill and solidification and is compared with the experiment. Faster filling-time and faster solidification for the temperature-dependent material properties were shown.
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Reports on the topic "Aluminum castings. Metals"

1

Han, Q., K. L. More, M. R. Myers, M. J. Warwick, and Y. C. Chen. Reinforcement of Aluminum Castings with Dissimilar Metals. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/940372.

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2

Han, Q. Reinforcement of Aluminum Castings with Dissimilar Metals. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/885813.

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3

Pehlke, R. D., and S. W. Hao. Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Quarterly project status report, October 1--December 31, 1998. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/307961.

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4

Pehlke, R. D., and S. W. Hao. Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Quarterly project status report, April 1--June 30, 1998. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/638205.

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5

Pehlke, R. D., Shouwei Hao, and J. M. Cookson. Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Quarterly project status report, January 1, 1998--March 31, 1998. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/604394.

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6

Pehlke, R. D., and S. W. Hao. Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Annual project status report for the period October 1, 1997 to September 30, 1998. Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/674983.

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7

''Heat Transfer at the Mold-Metal Interface in Permanent Mold Casting of Aluminum Alloys'' Final Project Report. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/791727.

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