Bibliografias temáticas / Alloy casting

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Literatura científica selecionada sobre o tema "Alloy casting"

Autor: Grafiati
Publicado: 4 de junho de 2021
Última modificação: 6 de setembro de 2023

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Artigos de revistas sobre o assunto "Alloy casting"

1

Szymczak, T., G. Gumienny, I. Stasiak e T. Pacyniak. "Hypoeutectic Al-Si Alloy with Cr, V and Mo to Pressure Die Casting". Archives of Foundry Engineering 17, n.º 1 (1 de março de 2017): 153–56. http://dx.doi.org/10.1515/afe-2017-0028.

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Abstract This paper presents the results of hypoeutectic 226 grade alloy as well as prepared on its basis Al-Si alloy containing Cr, V and Mo. The additives tested were added as AlCr15, AlV10 and AlMo8 master alloys. Alloys tested were poured into DTA sampler as well as using pressure die casting. An amount of Cr, V and Mo additives in alloy poured into DTA sampler comprised within the range approximately 0.05-0.35%. Alloys to pressure die casting contained 0.05-0.20% Cr, V and Mo. The crystallization process was examined using the derivative thermal analysis (DTA). The microstructure of castings made in the DTA sampler as well as castings made with use of pressure die casting were examined. The basic mechanical properties of castings made using pressure die casting were defined too. It has been shown in the DTA curves of Al-Si alloy containing approximately 0.30 and 0.35% Cr, Mo, and V there is an additional thermal effect probably caused by a peritectic crystallization of intermetallic phases containing the aforementioned additives. These phases have a morphology similar to the walled and a relatively large size. The analogous phases also occur in pressure die casting alloys containing 0.10% or more additions of Cr, V and Mo. The appearance of these phases in pressure die casting Al-Si alloys coincides with a decrease in the value of the tensile strength Rm and the elongation A. It has been shown die castings made of Al-Si alloys containing the aforementioned additives have a higher Rm and A than 226 alloy.
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Daswa, Pfarelo, Heinrich Moller e Gonasagren Govender. "Overageing Characteristics of Alloy A356 and Al-Mg-Si Casting Alloys". Solid State Phenomena 285 (janeiro de 2019): 75–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.75.

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Al-Si-Mg casting alloys, such as Al-7Si-0.3Mg alloy A356, are heat treatable and can be precipitation hardened to the T6 temper condition. However, Al-Mg-Si casting alloys (5xx series) are generally not considered to be heat treatable. These 5xx series castings are known for good castability and good resistance to corrosion, especially in marine environments. This paper investigates the extent to which 5xx series alloys could possibly be artificially aged. The influences of artificial ageing time on the overageing characteristics of both Al-Mg-Si and A356 casting alloys have been studied. A356 aluminium alloy castings were produced using the CSIR rheo-high pressure die casting process (R-HPDC). Al-Mg-Si alloys were cast using permanent mould casting. The rate of overageing of these alloys is of importance for potential higher temperature applications. The overageing characteristics of Al-Mg-Si and A356 aluminium alloys have been investigated at an artificial ageing temperature of 190°C for ageing times up to 128 hours. It is shown that the rate of overageing of Al-Mg-Si casting alloys is lower than for alloy A356. This could possibly result in the use of these alloys in applications at temperatures that are higher than where alloy A356 can be employed. It also allows the possibility of using the 5xx series alloys as an alternative to other Al-alloys for R-HPDC applications.
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Vanko, B., e L. Stanček. "Utilization of Heat Treatment Aimed to Spheroidization of Eutectic Silicon for Silumin Castings Produced by Squeeze Casting". Archives of Foundry Engineering 12, n.º 1 (1 de janeiro de 2012): 111–14. http://dx.doi.org/10.2478/v10266-012-0021-1.

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Utilization of Heat Treatment Aimed to Spheroidization of Eutectic Silicon for Silumin Castings Produced by Squeeze Casting This paper describes the possibility of using very short periods of solution annealing in the heat treatment of unmodified hypoeutectic silumin alloy AlSi7Mg0,3 casted by method of casting with crystallization under pressure with forced convection (direct squeeze casting process). Castings prepared at different casting parameters were subjected to special heat treatment called SST (Silicon Spheroidization Treatment), which were originally used only for the modified silumin alloys to spheroidization of eutectic silicon. Temperature holding time in solution annealing of T6 heat treatment is limited in the SST process to only a few minutes. It was studied the effect of casting parameters and periods of solution annealing on ultimate strength, yield strength, and especially ductility that in the unmodified silumin alloy castings is relatively low.
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Eperješi, Š., M. Matvija, ľ. Eperješi e M. Vojtko. "Evaluation of Cracking Causes of AlSi5Cu3 Alloy Castings". Archives of Metallurgy and Materials 59, n.º 3 (28 de outubro de 2014): 1089–92. http://dx.doi.org/10.2478/amm-2014-0187.

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Abstract Recently, the castings made from aluminum-silicon alloys by pressure die casting are increasingly used in the automotive industry. In practice, on these castings are high demands, mainly demands on quality of their structure, operating life and safety ensuring of their utilization. The AlSi5Cu3 alloy castings are widely used for production of car components. After the prescribed tests, the cracks and low mechanical properties have been identified for several castings of this alloy, which were produced by low pressure casting into a metal mould and subsequent they were heat treated. Therefore, analyses of the castings were realized to determine the causes of these defects. Evaluation of structure of the AlSi5Cu3 alloy and causes of failure were the subjects of investigation presented in this article.
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Nadolski, M., Z. Konopka, M. Łągiewka e A. Zyska. "The Influence of the Method of Mould Filling on the Quality of Castings Made of EN AC-44000 or EN AC-46200 Alloy". Archives of Foundry Engineering 14, n.º 4 (1 de dezembro de 2014): 73–76. http://dx.doi.org/10.2478/afe-2014-0089.

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Abstract The performed examinations concerning the process of filling the plaster ceramic moulds with aluminium alloys allowed to assess the influence of various methods of introducing the metal into the mould cavity on the macro- and microstructure of the obtained experimental castings. The comparison was performed for castings with graded wall thickness made either of EN AC-44000 alloy or of EN AC-46000 alloy, produced either by gravity casting, or by gravity casting with negative pressure generated around the mould (according to the Vacumetal technology), or by counter-gravity casting. It was found that the silicon crystals grow in size with an increase in wall thickness due to the slower cooling and solidification of castings
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Vanko, Branislav, Ladislav Stanček, Michal Čeretka, Eduard Sedláček e Roman Moravčík. "Properties of EN AW-2024 Wrought Aluminum Alloy after Casting with Crystallization under Pressure". Scientific Proceedings Faculty of Mechanical Engineering 23, n.º 1 (1 de dezembro de 2015): 58–65. http://dx.doi.org/10.1515/stu-2015-0009.

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Abstract Establishing of wrought aluminum alloys casting to manufacture is now a global trend, for example due to lower production costs compare to forging or due to the ability to produce parts with thinner sections and more complex shapes. The aim of using these alloys in the foundry industry is in particular the creation of castings with higher mechanical properties than achieve castings made of standard casting aluminum alloys. Most often are cast wrought aluminum alloys of the 2xxx, 6xxx and 7xxx series. In the experiment, an alloy EN AW-2024 has been cast by modified technology of casting with crystallization under pressure. They were measured basic mechanical properties of the castings in the as-cast state and after heat treatment.
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Říhová, M., J. Cech e J. Havlíčková. "Evaluation of Porosity in Al Alloy Die Castings". Archives of Foundry Engineering 12, n.º 1 (1 de janeiro de 2012): 93–98. http://dx.doi.org/10.2478/v10266-012-0018-9.

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Evaluation of Porosity in Al Alloy Die Castings Mechanical properties of an Al-alloy die casting depend significantly on its structural properties. Porosity in Al-alloy castings is one of the most frequent causes of waste castings. Gas pores are responsible for impaired mechanical-technological properties of cast materials. On the basis of a complex evaluation of experiments conducted on AlSi9Cu3 alloy samples taken from the upper engine block which was die-cast with and without local squeeze casting it can be said that castings manufactured without squeeze casting exhibit maximum porosity in the longitudinal section. The area without local squeeze casting exhibits a certain reduction in mechanical properties and porosity increased to as much as 5%. However, this still meets the norms set by SKODA AUTO a.s.
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Wang, Yingli, e Fengxian Wang. "Key Analysis of Design and Numerical Simulation for Aluminum Alloy Impeller Low-pressure Casting Mold". Journal of Physics: Conference Series 2338, n.º 1 (1 de setembro de 2022): 012070. http://dx.doi.org/10.1088/1742-6596/2338/1/012070.

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Abstract It is of great practical value to complete the low-pressure casting of aluminum alloy impeller in the current development of low-pressure casting process. In the research, it is necessary to focus on factory realization and use low-pressure casting to produce aluminum alloy impellers, so that impeller castings with compact structure and meeting performance requirements can be obtained. Compared with other casting methods, low-pressure casting itself, as a precision casting method, can be cast on the metal solution with lower pressure in the application process. The castings can be filled and solidified under certain pressure, and the castings with compact structure can be obtained. In the research, Pro / Engineer is used to design the low-pressure casting mold for aluminum alloy impeller, and MAGMASOFT is used to carry out the filling and solidification process of aluminum alloy impeller. Through numerical simulation, we can accurately predict the defects of impeller castings, and optimize the mold scheme and pressure-time parameters according to the prediction results.
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Guan, Tian Yang, Zhi Feng Zhang, Min He, Yue Long Bai e Ping Wang. "Effects of Annular Electromagnetic Stirring Melt Treatment on Microstructure and Mechanical Properties of 7050 Rheo-Casting". Solid State Phenomena 285 (janeiro de 2019): 219–23. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.219.

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The microstructure and mechanical properties of 7050 alloy rheo-castings after treated by Annular Electromagnetic Stirring (A-EMS) melt treatment were investigated. The results revealed that, under A-EMS, the refinement and homogeneity of the solidification structure could be improved greatly and the slurry was suitable for the following rheo-casting; and also the hot-cracking defects in the casting process were significantly alleviated, meanwhile, the strength and ductility of the alloy casting were found to be comparable to those of conventionally forged 7000 series alloys.
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Liu, Yan Gai, Zhao Hui Huang, Hao Ding, Ming Hao Fang e Shou Mei Xiong. "Study on Pressure Variations in the Mold of Magnesium Alloy Die Castings". Key Engineering Materials 353-358 (setembro de 2007): 1614–16. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1614.

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High pressure die casting is the most common method in making magnesium alloys for both auto parts and 3C products. Pressure variations in the mold during mold filling and solidification process have direct influences on the quality and properties of die castings. In this paper, a cylinder head cover was produced to experimentally study pressure variations in the mold during magnesium alloy die-casting process in real time for the first time. Pressure varies at different positions in the mold during die casting process. This study indicates that mold filling and solidification process of magnesium alloy die castings can be described by pressure curves obtained by pressure measurement at different test positions in the cavity in real time.
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Teses / dissertações sobre o assunto "Alloy casting"

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Trejo, Eduardo. "Centrifugal casting of an aluminium alloy". Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3041/.

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In centrifugal casting, molten metal is introduced into a mould which is rotated at high speed. The centrifugal force helps to fill thin sections but this benefit may be offset by the effect of the turbulent flow on the casting quality. In this research, the effect of direct and indirect gated mould designs on the quality and reliability of aluminium alloy investment castings made by centrifugal casting was investigated. The scatter in the ultimate bend strength and the modulus of elasticity was analyzed using the Weibull statistical technique, which showed that the Weibull modulus of both properties was significantly improved for the indirect gated cast test bars compared to the direct gated bars. A detailed microstructural characterization was carried out on the cast test bars, which included grain size, dendrite cell size and porosity. Scanning electron microscopy was used to examine and analyze the presence of defects on the fracture surfaces such as shrinkage pores, entrapped bubbles and oxide films resulting from surface turbulence during mould filling. The results indicated a clear correlation between the mechanical properties and the presence of casting defects. Water modelling experiments were carried out using purpose-built experimental centrifugal casting equipment and filling sequences recorded using a high speed video camera. The water modelling results showed that the general tendency for the direct and indirect gated mould designs was that the higher the rotational velocity, the lower the filling length and consequently the lower the filling rate. Subsequently, this information was used to validate the computer software ANSYS CFX. An excellent correlation was obtained between the experimental water modelling and simulation results for both direct and indirect gated moulds.
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Manson-Whitton, Chris. "Squeeze casting of a conventionally wrought aluminium alloy". Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403577.

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Gradwell, K. I. "Precipitation in a high strength magnesium casting alloy". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492848.

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Tantipaibulvut, Chairath. "An evaluation of the production of magnesium base alloy castings by the expendable pattern casting process". Thesis, Loughborough University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250959.

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Spataro, Mark Paul. "Comparison of mechanical performance between magnesium alloy sand castings and high pressure die castings /". [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18378.pdf.

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Smillie, Matthew John. "Casting and Analysis of Squeeze Cast Aluminium Silicon Eutectic Alloy". Thesis, University of Canterbury. Mechanical Engineering, 2006. http://hdl.handle.net/10092/1086.

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Squeeze casting is the practise of solidifying metals under mechanically applied pressure via a slow displacement of a die volume. It has been shown that squeeze casting enhances the mechanical properties of cast metals. Research into other high integrity casting processes has shown that using techniques that enhance melt quality can further increase the mechanical properties. Therefore a bottom-tapped, bottom-fed squeeze casting machine was designed and built around a pre-existing squeeze casting die designed for uniaxial pressure application. This was used to obtain quantitative metallurgical and microstructural information on the squeeze castings produced, including the effects of common micro-alloying additions of strontium modifier and titanium modifier on the microstructure and hardness of a commercial aluminium silicon eutectic alloy. These were examined using a Taguchi design of experiments approach. It was found that squeeze casting reduced porosity and secondary dendrite arm spacing and increased hardness, and reduced or eliminated increases in porosity and secondary dendrite arm spacing associated with micro-alloying addition. The size of possibly deleterious iron-rich precipitates was reduced, and the morphology of such precipitates changed to a possibly less deleterious form without further alloy additions of manganese. It was also found that melt control and handling is essential for consistent quality of castings in the production of small volume squeeze castings, such as the ones produced in this experimental work.
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Butler, Simon Andrew. "The development of a reliable high strength aluminium casting alloy". Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570853.

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An investigation was carried out into the variability of tensile properties of A201 aluminium alloy investment castings. Fracture surfaces and microstructures of tensile specimens were examined by scanning electron and light microscopy. Chemical analysis of phases was carried out using energy dispersive x-ray analysis. Casting composition variations were measured using spark emission spectroscopy. The main factors that contributed to the variation of properties were incipient grain boundary melting during heat treatment, the macro segregation of chemical alloying elements and interdendritic porosity that had not sealed during the hot isostatic pressing (HIPping) process. Simple step plate castings were produced to investigate the effect of changes in section thickness on the local segregation of alloying elements. The compositional variations occur due to the flow of solute rich liquid through the dendrite interstices in the mushy zone. An investigation was carried out into the effect of titanium diboride particles on the formation of macro segregation and interdendritic porosity. It was found that by increasing the concentration of titanium diboride particles above 2.7 +/- 0.2 % the tendency for macro segregation was reduced to negligible levels. The formation of surface connected pores, as revealed by dye penetrant examination, was also reduced when this. concentration was exceeded. The change in the solidification behaviour is due to a lack of coherent dendrite formation in the mushy zone. This results in solidification contraction being compensated for by mass feeding rather than interdendritic fluid flow of liquid through the dendrite interstices. An additional effect of the presence of the particles was to prevent the formation of a low melting point'phase containing copper, magnesium and silver. This reduced the susceptibility of the alloy to grain boundary incipient melting during solution heat treatment. In the light of the findings of the experimental work the concept of casting reliability is discussed. The importance of preventing the variability of tensile properties by robust alloy design is highlighted. The future design and development of reliable components with regard to process specification and property prediction is discussed.
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Albonetti, Rob. "Porosity and intermetallic formation in lost foam casting of 356 alloy". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0018/MQ58012.pdf.

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Gorsky, Daniel A. "Niyama Based Taper Optimizations in Steel Alloy Castings". Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316191746.

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Mezger, Peter Richard. "Corrosion behaviour of dental casting alloys some palladium-containing alloy developments : een wetenschappelijke proeve op het gebied van de geneeskunde en tandheelkunde /". Nijmegen : Katholieke Universiteit te Nijmegen, 1989. http://catalog.hathitrust.org/api/volumes/oclc/38087336.html.

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Livros sobre o assunto "Alloy casting"

1

Butler, Simon Andrew. The development of a reliable high strength aluminium casting alloy. Birmingham: University of Birmingham, 2000.

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2

Qigui, Wang, Krane Matthew J. M, Lee P. D, Minerals, Metals and Materials Society. Meeting e Minerals, Metals and Materials Society. Aluminum Committee., eds. Simulation of aluminum shape casting processing: From alloy design to mechanical properties : proceedings of symposium. Warrendale, Pa: TMS, 2006.

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3

Ajdar, Ramin. The effect of mold materials on solidification, microstructure and fluidity of A356 alloy in lost foam casting. Ottawa: National Library of Canada, 2001.

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4

George C. Marshall Space Flight Center., ed. High-strength aluminum casting alloy for high-temperature applications: (MSFC Center director's discretionary fund final project no. 97-10). [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1998.

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George C. Marshall Space Flight Center., ed. High-strength aluminum casting alloy for high-temperature applications: (MSFC Center director's discretionary fund final project no. 97-10). [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1998.

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Lee, J. A. High-strength aluminum casting alloy for high-temperature applications: (MSFC Center director's discretionary fund final project no. 97-10). [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1998.

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George C. Marshall Space Flight Center., ed. High-strength aluminum casting alloy for high-temperature applications: (MSFC Center director's discretionary fund final project no. 97-10). [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1998.

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8

Chadwick, H. The effect of compositional changes on the hot-shortness and tensile properties of the high strength aluminium casting alloy K0-1. Birmingham: University of Birmingham, 1992.

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A, Belov N., e Glazoff Michael V, eds. Casting aluminum alloys. Amsterdam: Elsevier Science, 2007.

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Society, Non-Ferrous Founders, e Copper Development Association, eds. Copper casting alloys. New York: Copper Development Association, 1994.

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Capítulos de livros sobre o assunto "Alloy casting"

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Haga, T., H. Watari e S. Kumai. "High Speed Roll Casting of Al Alloy and Mg Alloy Strips". In Continuous Casting, 143–48. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527607969.ch19.

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Brey, Michael. "Horizontal Continuous Casting of Copper Alloy Billets". In Continuous Casting, 323–32. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch48.

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Motegi, Tetsuichi, e Fumi Tanabe. "Continuous Casting of Semisolid Al-Si-Mg Alloy". In Continuous Casting, 82–86. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch12.

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Senkov, O. N., A. P. Druschitz, S. V. Senkova, K. L. Kendig e J. Griffin. "Ultra-High Strength Sand Castings from Aluminum Alloy 7042". In Shape Casting, 199–206. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062050.ch24.

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Yüksel, Çağlar, Uğur Aybarc, Eray Erzi, Derya Dispinar e Mustafa Cigdem. "Melt Cleaning Efficiency of Various Fluxes for A356 Alloy". In Shape Casting, 273–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06034-3_26.

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Gürsoy, Özen, Eray Erzi e Derya Dispinar. "Casting Defect Analysis on Fracture Surface of 356 Aluminium Alloy". In Shape Casting, 151–57. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06034-3_15.

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Archer, Lucas, F. V. Guerra e Christoph Beckermann. "Measurement of Air Entrainment During Pouring of an Aluminum Alloy". In Shape Casting, 31–43. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06034-3_3.

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Kalkan, Ibrahim Halil, Omer Vardar, Ibrahim Göksel Hızlı, Eray Erzi, Ozen Gürsoy e Derya Dışpınar. "Correlation Between Melt Quality and Machinability of Al9Si3Cu HPDC Alloy". In Shape Casting, 343–52. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06034-3_34.

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Neumann, Karsten, Bernd Friedrich, Klaus Krone, Jürgen Jestrabek e Elmar Nosch. "Hydrogen in Aluminum Containing Copper Alloy Melts - Solubility, Measurement and Removal". In Continuous Casting, 13–19. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch2.

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Tøndel, Per Arne, Gary Grealy, John Henry Hayes, Gabriel Tahitu, Einar Kristian Jensen, Inge Jan Thorvaldsen e Dietmar Brandner. "Improved Metal Distribution during DC-casting of Aluminum Alloy Sheet Ingots". In Continuous Casting, 61–70. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch9.

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Trabalhos de conferências sobre o assunto "Alloy casting"

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Shenefelt, Jeffrey R., Rogelio Luck, John T. Berry e Robert P. Taylor. "Solidification Modeling and Porosity Control in Aluminum Alloy Castings". In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0710.

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Abstract Commercial software packages enable the thermal environment of shaped castings to be determined provided the boundary conditions are well understood. Criteria functions (CF’s) based on the thermal environment provide a means for estimating shrinkage porosity within a casting. However, the CF’s do not account for gas driven porosity forming within the casting. This paper reviews the CF’s and additional approaches to account for hydrogen evolution in aluminum-copper and aluminum-silicon alloys.
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Harris, Ken, e Jacqueline B. Wahl. "CM 939 Weldable® Alloy". In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53966.

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IN 939 alloy, developed by the International Nickel Co. in the late 1960s, is a unique 22% Cr hot corrosion resistant γ′ strengthened, cast nickel-base superalloy. It is widely used in industrial gas turbines for equiaxed vanes, vane segments and burner nozzles and is of interest to the aero turbine industry for LP and PT integral nozzles (vane rings) and high temperature turbine casings. However, IN 939 is considered difficult to weld repair without parent metal microcracking and can exhibit marginal ductility in heavy section castings. Cannon-Muskegon has developed a proprietary chemistry modified version of IN 939 alloy designated CM 939 Weldable®. Emphasis has been directed on optimizing aim chemistry and ultra high purity manufacture using CM-developed single crystal superalloy melting and raw material technology and subsequently on obtaining superior casting microstructure for improved weldability and mechanical properties. Alloy purity and heat cleanliness will be discussed, along with a simplified two-step heat treatment cycle, resulting in attractive microstructure, mechanical properties and repair weldability. Significant market interest has resulted in extensive vacuum casting experience throughout the gas turbine industry. Excellent results in terms of fluidity, casting cleanliness and minimal microporosity have been obtained without any hot tearing or hot cracking problems.
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Bayha, T. D., M. Lu e K. E. Kloske. "Investment Casting of Allvac 718Plus Alloy". In Superalloys. TMS, 2005. http://dx.doi.org/10.7449/2005/superalloys_2005_223_232.

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Haga, Toshio, Sinjiro Imamura, Hisaki Watari e Shinichi Nishida. "Effect of Casting Conditions on Fluidity of Aluminum Alloy in Die Casting". In JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/lemp2020-8625.

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Abstract The fluidity of pure aluminum and Al-Si alloys was investigated for casting thin products using a spiral die in die casting. An aluminum alloy with good fluidity can be die-cast into thin products. For a Si content of less than 6 mass%, the fluidity increased with decreasing Si content. For a Si content of greater than 6 mass%, the fluidity increased with increasing Si content. The fluidity was affected by latent heat, flowability in the semisolid state, and heat transfer between the die and metal. For pure aluminum, the latent heat is small and there is no semisolid state. However, pure aluminum has excellent fluidity because the heat transfer between the die and metal is small. For Al-25%Si, the latent heat is very large and flowability increases in the semisolid state. Therefore, the fluidity of Al-25%Si is high. Fluidity typically increases with increasing die temperature. The increase in fluidity due to an increase in die temperature for the pure aluminum is small compared with that for hypoeutectic Al-Si alloys. This means that the heat transfer between the pure aluminum and the die is smaller than that for hypoeutectic Al-Si alloys. Therefore, the influence of die temperature on the fluidity of the pure aluminum is small. It is estimated that the chill layer of the pure aluminum rapidly peels from the die, decreasing the heat transfer between the pure aluminum and the die.
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Nakamura, R., T. Haga, H. Tsuge, H. Watari, S. Kumai, Francisco Chinesta, Yvan Chastel e Mohamed El Mansori. "Roll Casting of Aluminum Alloy Clad Strip". In INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES (AMPT2010). AIP, 2011. http://dx.doi.org/10.1063/1.3552522.

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Thompson, R. G., e B. A. Boutwell. "Microstructure Analysis of Fine Grain Alloy 718 Casting". In Superalloys. TMS, 1994. http://dx.doi.org/10.7449/1994/superalloys_1994_213_228.

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Bess, Michael L. "A Designer Overview to Zinc Alloy Die Casting". In Passenger Car Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1987. http://dx.doi.org/10.4271/871954.

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King, Philip, Daniel Martinez e Guha P. Manogharan. "Novel Sprue Designs to Reduce Casting Defects in Nickel-Aluminum Bronze: A Computational Study". In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8486.

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Abstract As 3D Sand-Printing technology becomes more widely available to the casting market, the search for opportunities to take advantage of its freedom of design is critical for its rapid adoption by the casting community. This original research investigates casting design principles towards defect-free alloy Nickel-Aluminum Bronze (NAB). This is an alloy of interest for marine applications due to its corrosion resistance, mechanical strength and good castability. Numerical modeling of flow within a casting is examined, and rigging redesigns are proposed to improve casting quality by controlling flow behavior. It has been demonstrated that turbulence and filling velocity are determining factors that seriously impact casting performance due to the generation of casting defects. Among these are bifilm formations, gas and sand entrapment and cold shut. This work examines the effectiveness of mathematically designed rigging components in controlling mold filling and compares the results to a conventional casting rig. Design solutions are proposed using 3DSP that can be directly applied to casting operations of Nickel-Aluminum Bronze. The results from this study demonstrate the effectiveness of mathematically designed sprues to reduce filling velocity of Nickel-Aluminum Bronze. The procedure followed here can be extended to marine casting production environments. Findings from this study can be seamlessly transferred to castings of any geometry, alloy and pouring conditions.
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Li, Shengchao, Shen Yan, Zhonghua Cao, Shixin Liu e Dali Chen. "Data-Driven Optimization Method for Aluminum Alloy Casting Process Parameters and Alloy Composition". In 2021 33rd Chinese Control and Decision Conference (CCDC). IEEE, 2021. http://dx.doi.org/10.1109/ccdc52312.2021.9602116.

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Chivu, Oana. "ENVIRONMENTAL POLLUTION IN THE CASE OF METAL ALLOY CASTING". In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/4.2/s19.057.

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Relatórios de organizações sobre o assunto "Alloy casting"

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David Schwam, John F. Wallace, Qingming Chang e Yulong Zhu. Optimization of Squeeze Casting for Aluminum Alloy Parts. Office of Scientific and Technical Information (OSTI), julho de 2002. http://dx.doi.org/10.2172/801193.

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Masuda, Kenichi, Shigetaka Morita, Kuniharu Ushijima, Shigeyuki Haruyama, Yasuhiro Akahoshi e Dai-heng Chen. Development of Impact-Absorbed Parts With Aluminum Alloy Casting (No. 1). Warrendale, PA: SAE International, maio de 2005. http://dx.doi.org/10.4271/2005-08-0233.

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Zhang, Jianyue, Michael Moodispaw e Alan Luo. Increasing melt efficiency and secondary alloy usage in aluminum die casting. Office of Scientific and Technical Information (OSTI), novembro de 2021. http://dx.doi.org/10.2172/1872208.

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Rohatgi, P. K. Development of lead-free copper alloy-graphite casting. Annual report, January--December 1994. Office of Scientific and Technical Information (OSTI), fevereiro de 1996. http://dx.doi.org/10.2172/282040.

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Venkatasamy, Vasanth Kumar. Analysis of in-cavity thermal and pressure characteristics in aluminum alloy die casting. Office of Scientific and Technical Information (OSTI), janeiro de 1996. http://dx.doi.org/10.2172/578731.

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Tirpak, J. D. The Variability of Fatigue Crack Growth Life of Aluminum Casting Alloy A357-T6. Fort Belvoir, VA: Defense Technical Information Center, julho de 1986. http://dx.doi.org/10.21236/ada174279.

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DANIEL, WILLIAM, TRACY RUDISILL e JARROD GOGOLSKI. DISSOLUTION FLOWSHEET FOR SKULL OXIDE GENERATED DURING U-MO ALLOY CASTING FOR HIGH PERFORMANCE RESEARCH REACTOR FUEL. Office of Scientific and Technical Information (OSTI), abril de 2022. http://dx.doi.org/10.2172/1866071.

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Wood, D. H., R. Flores e R. P. Kershaw. Preliminary investigation of grain refinement in a U-0.2 wt % V alloy casting by true isothermal transformation at 516{degree}C. Office of Scientific and Technical Information (OSTI), julho de 1995. http://dx.doi.org/10.2172/95559.

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Taylor, M. J., J. A. Keeney, M. W. Wendel e A. L. Demint. Development of a near-net-shape casting technology for the U-6Nb alloy. Part 1: Materials characterization, experiment design, and model construction. Office of Scientific and Technical Information (OSTI), janeiro de 1997. http://dx.doi.org/10.2172/425301.

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Uhara, Takehiro, e Hirotaka Kurita. The Effect of Surface Morphology of Cylinder Bore Surface on Anti-Scuffing Property made by High Pressure Die-Casting Process using Hyper-Eutectic Al-Si Alloy. Warrendale, PA: SAE International, outubro de 2013. http://dx.doi.org/10.4271/2013-32-9046.

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