Thematische Bibliographien / Solidification shrinkage

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Auswahl der wissenschaftlichen Literatur zum Thema „Solidification shrinkage“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "Solidification shrinkage"

Zhu, Li Guang, Jian Chen, Ying Xu, Cai Jun Zhang, and Shuo Ming Wang. "Simulation on Steel Solidification and its Shrinkage in Mould of FTSC Slab." Advanced Materials Research 472-475 (February 2012): 2018–23. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.2018.

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The solidification shrinkage of liquid steel has an important impact on thermal deformation behavior of high-temperature thin shell. Solidification shrinkage of liquid steel is an important basis for structure and shap optimization of the mould. In this paper, a direct coupled model was built on heat transfer in solidification and stress-strain by using the ANSYS software. And solidification shrinkage of liquid steel with the interior temperature and stress distribution were studied in the process of steel solidification, and it provided a theoretical basis for the further optimization of shap

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Rashid, Abira. "Optimization of Shrinkage Porosity in Grinding Media Balls by Casting Design Modification and Simulation Technique." International Journal for Research in Applied Science and Engineering Technology 9, no. VIII (August 15, 2021): 344–53. http://dx.doi.org/10.22214/ijraset.2021.37352.

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Shrinkage porosity or cavity are associated with the solidification of the metal either due to gas/air entrapment or when the shrinkage occurring during solidification is not entirely compensated by the riser. Shrinkage cavities occurring in the casting reduces its strength which leads to unfulfillment of the desired serviceability. In this paper, casting design has been modified using the DISA manual to achieve directional solidification which directly relates to improvement of casting quality. The running of metal from pouring basin into casting along with solidification has been analysed th

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He, Bin Feng, and Zhu Qing Zhao. "Numerical Simulation of Chilled Cast Iron Camshaft in Sand Casting Process." Applied Mechanics and Materials 44-47 (December 2010): 117–21. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.117.

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There are many kinds of casting defects such as insufficient pouring, cooling separation, crack, and shrinkage and soon on were formed in the mold filling and the solidification process, which affect the final casting performance. Based on the mathematical models of mold filling and solidification process, the numerical simulation of chilled cast iron camshaft in sand casting process has been done. The filling behaviors at each stage in the filling process were presented. The temperature distributions in the solidification process were obtained, and the positions of shrinkages were predicted.

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Boonmee, Sarum, and Letrit Chuencharoen. "The Study of Solidification Behavior in Cast Irons Using the Linear Displacement Method." Solid State Phenomena 263 (September 2017): 77–81. http://dx.doi.org/10.4028/www.scientific.net/ssp.263.77.

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This study aims to assess the solidification shrinkage and expansion during the solidification of cast irons. The solidification shrinkage and expansion in cast irons are due to the formation of austenite and graphite respectively. In this study, the linear displacement method was used to observe the solidification event combined with the cooling curve analysis. It was found that the cooling and displacement curves show good correlations in time of events during solidification. The displacement due to graphite expansion increased with the carbon equivalent. The linear expansion of 0.2 to 1.9 m

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Xiao, Feng, Renhui Yang, Liang Fang, and Chi Zhang. "Solidification shrinkage of Ni–Cr alloys." Materials Science and Engineering: B 132, no. 1-2 (July 2006): 193–96. http://dx.doi.org/10.1016/j.mseb.2006.02.019.

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Ghomy, M. Emamy, and J. Campbell. "Solidification shrinkage in metal matrix composites." Cast Metals 8, no. 2 (July 1995): 115–22. http://dx.doi.org/10.1080/09534962.1995.11819199.

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Wable, Girish S., Srinivas Chada, Bryan Neal, and Raymond A. Fournelle. "Solidification shrinkage defects in electronic solders." JOM 57, no. 6 (June 2005): 38–42. http://dx.doi.org/10.1007/s11837-005-0134-x.

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Korojy, B., L. Ekbom, and H. Fredriksson. "Microsegregation and Solidification Shrinkage of Copper-Lead Base Alloys." Advances in Materials Science and Engineering 2009 (2009): 1–9. http://dx.doi.org/10.1155/2009/627937.

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Microsegregation and solidification shrinkage were studied on copper-lead base alloys. A series of solidification experiments was performed, using differential thermal analysis (DTA) to evaluate the solidification process. The chemical compositions of the different phases were measured via energy dispersive X-ray spectroscopy (EDS) for the Cu-Sn-Pb and the Cu-Sn-Zn-Pb systems. The results were compared with the calculated data according to Scheil's equation. The volume change during solidification was measured for the Cu-Pb and the Cu-Sn-Pb systems using a dilatometer that was developed to inv

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Liu, Jin Xiang, Ri Dong Liao, and Zheng Xi Zuo. "Numerical Study on Solidification Process and Shrinkage Porosity for Engine Block Casting." Applied Mechanics and Materials 37-38 (November 2010): 753–56. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.753.

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The latent heat releasing and the criterion for shrinkage porosity in solidification progress of casting are studied. A numerical analysis is presented for solidification progress of the cylinder head casting using finite element method. The temperature distributions of the casting in different solidification phases are solved, and the shrinkage porosity is predicted. Based on this, the solidification progress of casting is evaluated. The simulation results can offer a helpful reference for casting design of cylinder head casting.

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Xie, Shi Kun, Rong Xi Yi, Zhi Gao, Xiang Xia, Cha Gen Hu, and Xiu Yan Guo. "Effect of Rare Earth Ce on Casting Properties of Al-4.5Cu Alloy." Advanced Materials Research 136 (October 2010): 1–4. http://dx.doi.org/10.4028/www.scientific.net/amr.136.1.

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The effects of adding rare earth Cerium on Al-4.5Cu alloy microstructure, solidification range and volume changes in the solidification process are researched. Experiments show that rare earth Cerium will bring remarkable effects on the alloy microstructure, solidification and solidification shrinkage interval. When the quantity of rare earth Cerium is about 4 wt%, the solid-liquid two phase of Al-4.5Cu alloy will range from 640°C to 600°C. The grains of the alloy are refined, round. The volume shrinkage is only 68.6% of that without adding rare earth Cerium.

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Dissertationen zum Thema "Solidification shrinkage"

Khalajzadeh, Vahid. "Modeling of shrinkage porosity defect formation during alloy solidification." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6155.

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Among all casting defects, shrinkage porosities could significantly reduce the strength of metal parts. As several critical components in aerospace and automotive industries are manufactured through casting processes, ensuring these parts are free of defects and are structurally sound is an important issue. This study investigates the formation of shrinkage-related defects in alloy solidification. To have a better understanding about the defect formation mechanisms, three sets of experimental studie

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Chen, Yin-Heng. "Study of solidification, shrinkage and natural convection in casting processes /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487676847114631.

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Lagerstedt, Anders. "On the shrinkage of metals and its effect in solidification processing." Doctoral thesis, KTH, Materials Science and Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-75.

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<p>The shrinkage during solidification of aluminium and iron based alloys has been studied experimentally and theoretically. The determined shrinkage behaviour has been used in theoretical evaluation of shrinkage related phenomena during solidification. </p><p>Air gap formation was experimentally studied in cylindrical moulds. Aluminium based alloys were cast in a cast iron mould while iron based alloys were cast in a water-cooled copper mould. Displacements and temperatures were measured throughout the solidification process. The modelling work shows that the effect of vacancy incorporation d

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Svidró, Péter. "Study of solidification and volume change in lamellar cast iron with respect to defect formation mechanisms." Licentiate thesis, KTH, Tillämpad processmetallurgi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-136985.

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Lamellar cast iron is a very important technical alloy and the most used material in the casting production, and especially in the automotive industry which is the major consumer. Beside the many great properties, it is inclined to form casting defects of which some can be prevented, and some may be repaired subsequently. Shrinkage porosity is a randomly returning problem, which is difficult to understand and to avoid. This defect is a volumetric deficiency which appear as cavities inside the casting in connection to the casting surface. Another frequent defect is the metal expansion penetrati

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Tadesse, Abel. "On the Volume Changes during the Solidification of Cast Irons and Peritectic Steels." Doctoral thesis, KTH, Metallernas gjutning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202558.

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This thesis work deals with the volume changes during the solidification of cast irons and peritectic steels. The volume changes in casting metals are related to the expansion and/or contraction of the molten metal during solidification. Often, different types of shrinkage, namely macro- and micro-shrinkage, affect the casting quality. In addition to that, exposure of the metal casting to higher contraction or expansion during the solidification might also be related to internal strain development in samples, which eventually leads to surface crack propagation in some types of steel alloys dur

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O'Brien, Evan Daniel. "Welding with Low Alloy Steel Filler Metal of X65 Pipes Internally Clad with Alloy 625: Application in Pre-Salt Oil Extraction." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469018389.

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Drbušková, Magdaléna. "Numerická analýza smršťování vybraných silikátových kompozitů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226798.

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The thesis is divided into two main parts. In the first theoretical part is described the problems of shrinking including a comparison of Czech standard and Model Code 2010, Vol. 1. The second practical part of the master`s thesis is focused on the numerical analysis shrinkage primarily on the initial stage of this process. The experimentally obtained data are set approximations of the relative deformation using ShrCeC. Subsequently the numerical simulation of shrinkage of selected silicate specimens using a computer applications SpatiDist and FyDiK 2D. The real test specimens are modelled as

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Šupálek, Milan. "Přesné lití turbínových kol turbodmychadel ze slitin TiAl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228729.

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This diploma thesis focuses on the causes of surface shrinkages at tur-bochargers wheels castings made from TiAl alloy. On the basis of simulation of solidification and cooling, the defect is being repaired by the simulation software Procast.

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Bhattacharya, Anirban. "Effect of Convection and Shrinkage on Solidification and Microstructure Formation." Thesis, 2014. http://etd.iisc.ernet.in/handle/2005/2798.

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Understanding the fundamental mechanisms of solidification and the relative significance of different parameters governing these mechanisms is of vital importance for controlling the evolution of microstructure during solidification, and consequently, for improving the efficacy of a casting process. Towards achieving this goal, the present work attempts to study the effect of convection and shrinkage on solidification and microstructure formation primarily through the development of computational models which are complemented with experimental investigations and analytical solutions. Convecti

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Bücher zum Thema "Solidification shrinkage"

Society, American Foundrymen's, ed. Numerical simulation of mold filling, solidification, and feeding of T-plate shrinkage test castings used in ductile iron plant trials. [Des Plaines, Ill: American Foundrymen's Society, 1992.

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Buchteile zum Thema "Solidification shrinkage"

Mo, Asbjørn, Torgeir Rusten, and Håvard J. Thevik. "Computation of Macrosegregation due to Solidification Shrinkage." In Numerical Methods and Software Tools in Industrial Mathematics, 177–94. Boston, MA: Birkhäuser Boston, 1997. http://dx.doi.org/10.1007/978-1-4612-1984-2_8.

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Petersen, Jon S. "Crystallization Shrinkage in the Region of Partial Solidification: Implications for Silicate Melts." In Structure and Dynamics of Partially Solidified Systems, 417–35. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3587-7_20.

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Saad, Ali, Charles-André Gandin, Michel Bellet, Thomas Volkman, and Dieter Herlach. "Simulation of shrinkage-induced macrosegregation in a multicomponent alloy during reduced-gravity solidification." In TMS 2016: 145thAnnual Meeting & Exhibition: Supplemental Proceedings, 35–42. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274896.ch5.

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Hennings, A., E. Schaberger-Zimmermann, and A. Bührig-Polaczek. "Solidification Morphology and Shrinkage Behavior of Mg-Alloys in Chill- and Sand Casting." In Magnesium, 1020–25. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch158.

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Eskine, Dmitri, and Laurens Katgerman. "Experimental Study of Linear Shrinkage during Solidification of Binary and Commercial Aluminum Alloys." In Continuous Casting, 276–81. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch41.

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Saud, Ali, Charles-André Gandin, Michel Bellet, Thomas Volkmann, and Dieter Herlach. "Simulation of shrinkage-induced macrosegregation in a multicomponent alloy during reduced-gravity solidification." In TMS 2016 145th Annual Meeting & Exhibition, 35–42. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48254-5_5.

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Mortensen, Dag, Øyvind Jensen, Gerd-Ulrich Grün, and Andreas Buchholz. "Macrosegregation Modelling of Large Sheet Ingots Including Grain Motion, Solidification Shrinkage and Mushy Zone Deformation." In Light Metals 2019, 983–90. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_120.

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Wei, Yimeng, Areti Markopoulou, Yuanshuang Zhu, Eduardo Chamorro Martin, and Nikol Kirova. "Additive Manufacture of Cellulose Based Bio-Material on Architectural Scale." In Proceedings of the 2021 DigitalFUTURES, 286–304. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_27.

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AbstractThere are severe environmental and ecological issues once we evaluate the architecture industry with LCA (Life Cycle Assessment), such as emission of CO2 caused by necessary high temperature for producing cement and significant amounts of Construction Demolition Waste (CDW) in deteriorated and obsolete buildings. One of the ways to solve these problems is Bio-Material. CELLULOSE and CHITON is the 1st and 2nd abundant substance in nature (Duro-Royo, J.: Aguahoja_Programmable Water-based Biocomposites for Digital Design and Fabrication across Scales. MIT, pp. 1–3 (2019)), which means significantly potential for architectural dimension production. Meanwhile, renewability and biodegradability make it more conducive to the current problem of construction pollution. The purpose of this study is to explore Cellulose Based Biomaterial and bring it into architectural scale additive manufacture that engages with performance in the material development, with respect to time of solidification and control of shrinkage, as well as offering mechanical strength. At present, the experiments have proved the possibility of developing a cellulose-chitosan- based composite into 3D-Printing Construction Material (Sanandiya, N.D., Vijay, Y., Dimopoulou, M., Dritsas, S., Fernandez, J.G.: Large-scale additive manufacturing with bioinspired cellulosic materials. Sci. Rep. 8(1), 1–5 (2018)). Moreover, The research shows that the characteristics (Such as waterproof, bending, compression, tensile, transparency) of the composite can be enhanced by different additives (such as xanthan gum, paper fiber, flour), which means it can be customized into various architectural components based on Performance Directional Optimization. This solution has a positive effect on environmental impact reduction and is of great significance in putting the architectural construction industry into a more environment-friendly and smart state.

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Campbell, John. "Solidification shrinkage." In Castings, 205–31. Elsevier, 2003. http://dx.doi.org/10.1016/b978-075064790-8/50024-3.

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Mahomed, Nawaz. "Shrinkage Porosity in Steel Sand Castings: Formation, Classification and Inspection." In Casting Processes and Modelling of Metallic Materials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.94392.

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In this Chapter, shrinkage porosity defects in steel castings are analysed, particularly for low carbon, high alloyed steels, which have applications in critical engineering components. It begins with the mechanisms for porosity formation within the solidification contraction phase of the casting cycle, highlighting the importance of feeder design. This is followed by characterisation of the solidification phase of steel alloys, including the evolution of phases, which is important in distinguishing between microstructure and porosity in microscopy analysis. A more detailed discussion of interdendritic feeding and mechanisms for shrinkage micro-porosity is then provided. This leads to the well-established interdendritic flow model and commonly-used thermal criteria for shrinkage porosity prediction. The discussions are then consolidated through the classification of shrinkage porosity in terms of formation mechanisms and morphology, and its causes relating to composition, design and process conditions. Finally, engineering standards for classification and inspection of porosity types and severity levels in steel castings are discussed. Throughout, basic design and process improvement approaches for improving melt feeding during solidification contraction is given, with emphasis on providing practical solutions for prediction and evaluation of shrinkage porosity defects in castings.

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Konferenzberichte zum Thema "Solidification shrinkage"

Wang, Hongda, Mohamed S. Hamed, and S. Shankar. "EFFECT OF SHRINKAGE ON Al-Si ALLOY SOLIDIFICATION." In Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer. Connecticut: Begellhouse, 2008. http://dx.doi.org/10.1615/ichmt.2008.cht.2220.

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Alavi, Sina, and Mohammad Passandideh-Fard. "Numerical Simulation of Droplet Impact and Solidification Including Thermal Shrinkage in a Thermal Spray Process." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22583.

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In this paper, we performed a numerical study on the effects of thermal shrinkage on deposition of molten tin and nickel droplets on a steel substrate in thermal spray processes using Volume-of-Fluid (VOF) method. Thermal shrinkage is a phenomenon caused by variation of density during solidification and cooling of molten metals. In our model, the Navier-Stokes equations along with energy equation including phase change are solved using a 2-D axisymmetric mesh. We used the VOF method to track the free surface of droplet. For solidification, we used an enthalpy-porosity formulation. The simulati

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Dohnalová, L., and P. Havlásek. "SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CONCRETE – MODELING WITH MICROPRESTRESS-SOLIDIFICATION THEORY." In Engineering Mechanics 2020. Institute of Thermomechanics of the Czech Academy of Sciences, Prague, 2020. http://dx.doi.org/10.21495/5896-3-122.

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Sedeh, Mahmoud Moeini, and J. M. Khodadadi. "Effect of Voids on Solidification of Phase Change Materials Infiltrated in Graphite Foams." In ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ht2012-58405.

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As a fundamental process during production of composite thermal energy storage systems, infiltration of phase change materials (PCM) leads to formation of voids (air pockets) inside the pores of graphite foams. The presence of voids inside graphite cells (i.e. the presence of air pockets next to the conductive walls of the porous structure) markedly affects the thermal and phase change behavior of the composite. Therefore, it is vitally important to investigate the effect of voids on phase change behavior of latent heat energy storage composites. In complementing recent work devoted to modelin

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Yomchinda, Thanan. "Modelling of solidification with shrinkage in vertical shell using particle method with spring-damp interaction." In 2017 Third Asian Conference on Defence Technology (ACDT). IEEE, 2017. http://dx.doi.org/10.1109/acdt.2017.7886175.

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Abdellatef, M., M. Alnaggar, G. Boumakis, G. Cusatis, G. Di-Luzio, and R. Wendner. "Lattice Discrete Particle Modeling for Coupled Concrete Creep and Shrinkage Using the Solidification Microprestress Theory." In 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479346.022.

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Rakita, Milan, and Qingyou Han. "Simulation of Solidification Defects for Prediction of Dross Formation in Aluminum 5182 Remelt Secondary Ingot." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84160.

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In aluminum recycling about 4% on average is lost on oxidation and dross. However, large percent of remelt secondary ingots (RSI) produce much more dross after remelting. It is rather surprising that no dross can be detected in the RSI, but after remelting some parts of apparently ‘healthy’ aluminum can give up to 80% of dross. This raises question how dross gets formed. Recent research proposes that the formation of dross after remelting of the RSI is closely related to the solidification process in the ingot, specifically the formation of shrinkage porosity, hydrogen porosity, and hot tearin

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Lauer, Mark A., David R. Poirier, Robert G. Erdmann, Luke Johnson, and Surendra N. Tewari. "Simulations of the Effects of Mold Properties on Directional Solidification." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66830.

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The mold geometry and its thermal properties greatly influence the solidification process. Finite element simulations of directional solidification in various molds are presented. These simulations were performed using volume averaged properties in the mushy zone in order to model the convection, transport of solute and energy, and phase change occurring during solidification. These simulations show the interactions of the mold and alloy with the resultant solidification phenomena, including steepling. Mold geometries can cause macrosegregation because of shrinkage flows, by interrupting the d

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Moeini Sedeh, Mahmoud, and J. M. Khodadadi. "Effect of Marangoni Convection on Solidification of Phase Change Materials Infiltrated in Porous Media in Presence of Voids." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17316.

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Void formation is encountered in the form of air pockets during preparation of composite thermal energy storage systems, consisting of phase change materials (PCM) infiltrated into a high-conductivity porous structure. The presence of voids within the pores of a porous structure degrades the thermal and phase change behavior of such composites. Recent work devoted to multiphase modeling of the infiltration of PCM in liquid state into porous media and formation of voids showed that among the various contributing driving forces (i.e. gravity, pressure gradient and interfacial forces), the interf

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Liu, Min-Jie, Zi-Qin Zhu, Li-Wu Fan, and Zi-Tao Yu. "An Experimental Study of Inward Solidification of Nano-Enhanced Phase Change Materials (NePCM) Inside a Spherical Capsule." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7317.

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Nano-enhanced phase change materials (PCM), referred to as NePCM, have been proposed by doping highly thermally-conductive nanofillers into matrix PCM to prepare composites that have enhanced thermal conductivity. The classical problem of inward solidification of PCM inside a spherical capsule, with applications to thermal energy storage, was revisited in the presence of nanofillers. In this work, the model NePCM samples were prepared with 1-tetradecanol (C14H30O) possessing a nominal melting point of 37 °C as the matrix PCM. Graphite nanoplatelets (GNPs) were synthesized and utilized as the n

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