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Dissertations / Theses on the topic 'Ductile cast iron'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Boeri, Roberto Enrique. "The solidification of ductile cast iron." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/30598.

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The microsegregation of Mn, Cu, Cr, Mo, Ni and Si has been measured in cast ductile iron and in ductile iron which has been quenched when partially solidified. Effective segregation coefficients have been determined for each of the elements, and used to calculate the segregation on the basis of the Scheil equation. The calculated values agree reasonably well with the values of the solute concentration as a function of the solid fraction measured in quenched samples. The microstructure of the solid phases during the solidification of ductile iron has been observed. Solidification of eutectic d

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2

Andersson, Sofia. "Study of Dross in Ductile Cast Iron Main Shafts." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-37148.

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The study of dross in ductile cast iron main shafts was performed at Global Castings Guldsmedshyttan AB and presented in this master thesis. The purpose of the study was to obtain answers to why dross defects were present in some of the foundry's casted main shafts, with the main problem located at the flange of the shaft. The chemical composition of the dross formations and which steps in the casting process that increased the dross formation were of interest. The study only included dross in main shafts manufactured at Global Castings Guldsmedshyttan AB. Dross particles form when elements su

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3

Zambrano, Habib. "Fatigue Assessment of Notches and Cracks in Ductile Cast Iron." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14632.

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The steadily increasing use of ductile cast iron and the necessity for building larger cast components present new challenges to the designers. In despite of large cast components are designed adhered to standards, unexpected failure sometime occurs. One reason is the inevitable manufacturing defects containing within the cast components that behave like cracks under cyclic loading. In addition the probability of a large defect to be situated at a critical region of the component increases with the size. Another reason is the effect of geometric discontinuities such as holes, threads and fille

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Taivalkoski, Olivia. "Evaluation of material properties after laser welding on ductile cast iron." Thesis, KTH, Materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254653.

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Scania wants to lower the weight of their trucks, including the goal to reduce the carbon dioxide emissions, and one way to do that is to use laser welding instead of fastenings.This bachelor thesis work is about laser welding of ductile cast iron, or spheroidal graphite cast iron or nodular cast iron, to QT-steels and case hardening steel and evaluation of the mechanical properties of the weld. Also laser welding of cast steel to the same two materials are being evaluated in this work. Tests are done to evaluate the effect on the material from laser welding. The tests are tensile tests and Vi

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Ekström, Madeleine. "Development of a ferritic ductile cast iron for improved life in exhaust applications." Licentiate thesis, KTH, Mekanisk metallografi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122006.

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Due to coming emission legislations, the temperature is expected to increase in heavy-duty diesel engines, specifically in the hot-end of the exhaust system affecting components, such as exhaust- and turbo manifolds. Since the current material in the turbo manifold, a ductile cast iron named SiMo51, is operating close to its limits there is a need for material development in order to maintain a high durability of these components. When designing for increased life, many material properties need to be considered, for example, creep-, corrosion- and fatigue resistance. Among these, the present w

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6

Ozcan, Alper. "The Effect Of Sn Content And Isothermal Transformation Temperature On The Mechanical Properties Of Austempered Ductile Cast Iron." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1055359/index.pdf.

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In this study the effects of Sn content and isothermal transformation temperature on the ultimate tensile strength (UTS), elongation and hardness of austempered ductile cast iron (ADI) was investigated. To determine the possible effect of Sn on these properties the Sn content of standard GGG30, GGG40 and GGG50 materials were taken as reference, whose chemical compositions vary from 0,016 to 0,050% in terms of Sn. However the Sn content was increased to a maximum of 0,26% for investigating the effect of Sn on mechanical properties. The test specimens were obtained from standard 1-in Y-blocks an

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7

Sofia, Wännman. "Influence of Nitrocarburization on Thermo-Mechanical Fatigue Properties : Material Characterization of Ductile Cast Iron for Exhaust Components." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-69160.

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The large number of vehicles operating on the roads cause high emissions and consequently a negative effect on the environment. When developing and optimizing internal combustion engines, certain requirements must be considered, which are environmental regulations, reduced fuel consumption and increased specific power. In order to meet these demands, an increase of the engine combustion pressure will occur usually accompanied with a temperature increase. During start-up and shut-down of an engine, it is subjected to cyclic thermo-mechanical fatigue (TMF) loads. The turbo manifold and exhaust m

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8

Mäkinen, Katri. "Optimisation of local material parameters : Optimising local material parameters in ductile cast iron cylinder head casting." Thesis, Jönköping University, JTH, Material och tillverkning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54500.

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The constantly tightening emission regulations demand the engines to be moreefficient, to get more power out of smaller engines. Higher engine loads andcomponent temperatures are causing more stresses to engine components. Therefore,a company that produces engines wanted to study if it would be possible to increasethe capabilities of the components by optimising the used material. In this final project work, a cylinder head will be studied. The cylinder heads for theengines are made of ductile cast iron. The limits of that material are near safety limits,and therefore a better material is need

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Eymard, Stéphanie. "Contribution à la valorisation tribologique des huiles de transformateur usagées." Thesis, Ecully, Ecole centrale de Lyon, 2014. http://www.theses.fr/2014ECDL0017.

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Les prévisions alarmistes en ressources naturelles encouragent la recherche de solutions alternatives au niveau mondial. Le recyclage devient alors un défi majeur pour la société, en particulier pour les produits dérivés du pétrole comme les huiles de transformateur. Cette étude est basée sur la recherche de nouvelles voies de revalorisation de ces huiles, par l’analyse critique du contexte concurrentiel, des segments de marché potentiels, ainsi que des propriétés physico-chimiques de ces huiles. Nous nous sommes attachés à déterminer l’adéquation des performances et caractéristiques des huile

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Kiattisaksri, Chatcharit. "Time-Resolved and In-Situ Study on Evolution of Spheroidal Graphite Nodules and Volume Change During Solidification in Ductile Cast Iron." Kyoto University, 2019. http://hdl.handle.net/2433/244548.

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Kryštůfek, Tomáš. "Odlévání tenkostěnných litinových odlitků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445175.

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This diploma thesis is focused on production and problems in production of thin-walled ductile iron castings, especially in the inoculation process. The focus is on the influence of elements on the structure and mechanical properties of ductile iron and as well as the influence of some elements, that are commonly used in inoculation alloys. Furthermore, the factors that affect the production technology are written, i.e., solidification rate, wall thickness, cooling rate, and factors used for affecting the thin-walled castings production, i.e., the use of insulating moulding compounds and incre

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Larsson, Karl. "Influence of nitrocarburization on the thermomechanical fatigue properties of ductile iron for exhaust components : Analysis and comparisons of TMF-properties." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-72033.

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New stricter environmental legislation requires lower emissions and fuel consumption of automotive engines. Therefore the fuel efficiency must be increased but this leads to higher loads in the engine. As for the exhaust system it is affected by higher thermomechanical loads. Until today the turbo manifold has been nitrocarburized in order to increase the wear resistance in slip joints with other exhaust components. The problem is that there is no knowledge of how the nitrocarburizing affects the thermomechanical properties of the material. The purpose of this thesis work is to examine the dif

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13

Eriksson, Viktor. "Numerical Simulation of Ductile Cast Iron Fracture : A parameterization of the material model *MAT_224 in the FE-code LS-DYNA." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-37576.

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In crashes, fracture of Ductile Cast Iron (DCI) components can have a big influence on the global behaviour of the structure and the survival probability of the driver. In this thesis the material model *MAT_224 is parameterized for one ferritic-pearlitic grade, SS-0727-02, of DCI. The aim is to better describe the fracture and yielding of DCI components in crash simulations using the FE-code LS-DYNA. This is done by mechanical testing and simulations where the hardening behaviour and failure criteria are quantified. The failure criteria are defined by a failure strain surface, which depends o

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Nyékyová, Dominika. "Vliv očkování litiny očkovadly s obsahem vizmutu na strukturu a mechanické vlastnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417173.

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The diploma thesis deals with the modification and inoculation of cast iron with spheroidal graphite, the influence of the chemical composition on the shape and size of the graphite nodules and ferrite/perlite ratio in the structure. The aim of the practical part was to determine the effect of inoculant containing bismuth (SMW 605) on microstructure and mechanical properties of ferritic ductile cast iron GJS 400-15. The dissolving time of mold inoculant was further investigated. The samples were subjected to a tensile test, Charpy impact test, hardness test and graphite morphology and ferrite/

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Persson, Daniel, and Eric Vinjegaard. "Undersökning av materialegenskaper för nytt segjärn i jämförelse med traditionellt." Thesis, Högskolan Väst, Avd för maskinteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5348.

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I denna rapport beskrivs en undersökning och jämförelse av två olika sorters segjärn. Detvå materialen som har studerats har varit det segjärnet som används i Parker Hannifinsnuvarande hydraulikmotorer och ett nytt segjärn, vars mekaniska egenskaper har påståttsvara mer fördelaktiga. Målet med arbetet var att få fram en tillförlitlig jämförelse av de olikamaterialen och avgöra om det fanns ett tydligt underlag för att inleda processen av ett byteav material i vissa komponenter i Parker Hannifins produkter.Det utfördes jämförelser mellan de olika materialens mekaniska egenskaper baserade delspå

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Buljac, Ante. "Compréhension, observation et quantification des mécanismes de rupture ductile par imagerie 3D." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLN036/document.

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Au cours des dernières décennies, des efforts importants ont été menés dans la modélisation des processus de rupture ductile entraînant des progrès substantiels. Cependant, la compréhension complète des mécanismes de rupture ductile dans des états de contraintes spécifiques demeure une question ouverte. Ceci est dû au manque de bases des données expérimentales et à la non validation des modèles pour ces conditions de chargement. Dans ce travail, les acquisitions de données sont principalement obtenues en utilisant la laminographie, ce qui rend possible l'imagerie de régions d'intérêt d'échanti

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Maluf, Omar. ""Influência do roleteamento no comportamento em fadiga de um ferro fundido nodular perlítico"." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-17032004-163144/.

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O processo de roleteamento é um tratamento superficial, comumente utilizado em peças fabricadas em aços e ferros fundidos nodulares, em regiões onde há concentradores de tensões, com o intuito de melhorar as propriedades de resistência à fadiga. Este processo endurece e introduz tensões residuais compressivas na camada superficial do material, através de deformação controlada, provocando uma redução das tensões de tração que atuam na superfície da peça submetida a carregamentos cíclicos. Este trabalho teve como principal objetivo o estudo do efeito do roleteamento superficial sobre o comportam

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Rosário, John Ferney Alvarez. "Avaliação da integridade da superfície no torneamento de um ferro fundido nodular com carboneto." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3132/tde-05092006-131535/.

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Neste trabalho, estudou-se a integridade superficial durante o torneamento de um ferro fundido nodular com carbonetos, considerando a heterogeneidade microestrutural (fração volumétrica, tamanho e morfologia de grafita e dos carbonetos) e os efeitos dos parâmetros de corte (avanço, velocidade de corte e profundidade de corte), baseados num planejamento fatorial fracionário 24-1. Este texto apresenta, numa primeira parte, uma revisão baseada em referências bibliográficas clássicas da engenharia de superfícies, na tentativa de definir os conceitos que compõem a integridade da superfície. Posteri

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19

Dong, Ming-Jing. "Effet de l'endommagement sur la ténacité de la fonte à graphite sphéroïdal." Châtenay-Malabry, Ecole centrale de Paris, 1995. http://www.theses.fr/1995ECAP0392.

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Cette étude porte sur l'influence de l'endommagement sur la loi de comportement et sur la ténacité de la fonte a graphite sphéroïdal. La microstructure des fontes GGG 40, GS 52 5%, GS 52 25%, a été caractérisée par analyse à la microsonde, observation au MEB, et analyse d'images. L’endommagement est décrit d'une part à l'échelle macroscopique par les paramètres D, le coefficient de dilatance et l'évolution du coefficient de poisson plastique, et d'autre part a l'échelle microscopique par observation au MEB des différents stades de la décohésion de l'interface graphite/matrice. Nous trouvons qu

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Nishikawa, Arthur Seiji. "Têmpera e partição de ferros fundidos nodulares: microestrutura e cinética." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05022019-092855/.

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Este trabalho está inserido em um projeto que procura estudar a viabilidade técnica da aplicação de um relativamente novo conceito de tratamento térmico, chamado de Têmpera e Partição (T&P), como alternativa para o processamento de ferros fundidos nodulares com alta resistência mecânica. O processo T&P tem por objetivo a obtenção de microestruturas multifásicas constituídas de martensita e austenita retida, estabilizada em carbono. A martensita confere elevada resistência mecânica, enquanto a austenita confere ductilidade. No processo T&P, após a austenitização total ou parcial da liga, o mate

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Zander, Patrik, and Johan Hammarström. "Värmebehandling av segjärn med hög kiselhalt." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-16377.

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Bakgrunden till detta examensarbete var att Qumex Materialteknik vid ett flertal tillfällen konstaterat att material av typen SS 0725 har uppvisat bristfälliga härdresultat. Materialet, som är relativt nytt på marknaden, är ett gjutjärn av typen segjärn och utmärker sig gentemot andra segjärn på grund av sitt höga innehåll av kisel. Då segjärn enligt den nu gällande EN-standarden klassificeras efter sina mekaniska egenskaper uppstår ett problem gällande SS 0725. Materialet uppfyller de krav som är ställda för EN-GJS-500-7 och hamnar därmed under samma materialbeteckning som ett segjärn med bet

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Jacumasso, Tiago. "INFLUÊNCIA DOS PARÂMETROS DE AUSTÊMPERA EM FERRO FUNDIDO NODULAR: MICROESTRUTURA, PROPRIEDADES MECÂNICAS E ASPECTOS DA GEOMETRIA FRACTAL NA FRATURA." Universidade Estadual de Ponta Grossa, 2018. http://tede2.uepg.br/jspui/handle/prefix/2684.

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Submitted by Angela Maria de Oliveira (amolivei@uepg.br) on 2018-11-22T18:11:23Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Tiago Jacumasso.pdf: 9316680 bytes, checksum: 9e1e6195d90b660e6d32c4f13481bf5b (MD5)<br>Made available in DSpace on 2018-11-22T18:11:23Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Tiago Jacumasso.pdf: 9316680 bytes, checksum: 9e1e6195d90b660e6d32c4f13481bf5b (MD5) Previous issue date: 2018-08-31<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A

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Tesařová, Hana. "Strukturní a mechanické charakteristiky niklových litin s kuličkovým grafitem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-233891.

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The aim of this dissertation work is the evaluation of the influence of nickel alloying on the structure and mechanical properties, both monotonic and dynamic, of nodular cast iron with ferritic and bainitic matrix. Two chock melts with 0.5 and 2.7 % Ni were used to study the nickel influence. The quantitative evaluation of structure of these melts using image analysis was done and basic tensile mechanical properties were determined. Subsequently, the time optimization of two-stage ferritic annealing and isothermal austempered heat treatment at 375 °C was performed with the aim to obtain optim

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Melado, André Caetano. "Ferros fundidos nodulares de alta resistência obtidos por tratamento térmico de têmpera e partição: microestrutura e comportamento mecânico." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-16072018-134449/.

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A aplicação do novo conceito de tratamento térmico, chamado de têmpera e partição (Q&P), desenvolvido para a obtenção de aços da terceira geração da classe AHSS (Advanced high strengh steel ou aços avançados de alta resistência), mostra-se uma alternativa para o processamento de ferros fundidos nodulares com alta resistência mecânica. No processo Q&P, o carbono presente na martensita supersaturada, formada na etapa de têmpera, é utilizado para estabilizar a austenita não transformada durante a etapa de partição, mantendo-a estável na temperatura ambiente. Essa rota de tratamento térmico consis

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Ceccon, Lorenzo. "Effetto dell'esposizione ad alta temperatura su microstruttura e proprietà meccaniche di ghise sferoidali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Lo scopo della presente ricerca è stato valutare l’effetto dell’esposizione ad alta temperatura su microstruttura e proprietà meccaniche di quattro ghise sferoidali prodotte dalle Fonderie Zanardi: ADI 1050 (ghisa duttile austemperata), IDI 800 (ghisa perlitica isotermica), GJS/800-2 (ghisa sferoidale perlitica) e GJS/400-18 (ghisa sferoidale ferritica). Lo studio ha previsto il degrado in temperatura dei quattro materiali, l’analisi delle proprietà meccaniche statiche dopo degrado termico mediante prove di durezza Brinell, analisi microstrutturali, XRD, prove di trazione sia a freddo che all

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Viskupič, Adam. "Vysokoteplotní koroze litin s kuličkovým grafitem typu SiMo." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319266.

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While using iron castings behind temperature of 500 C namely at cyclic heat straining degradation of structure and breaching iron castings. For this purpose introduce cast iron with content of Si and Mo. Focusing on improvement of SiMo51 for increased high-temmperature corrosion-and fatigue life in exhaust-gas temperatures up to 800 C. Thesis set up chemical microheterogeneity, properties, high temperature corosion and microhardness

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Magalhães, Elton Franco de. "Caracterização e proposição de métodos estimativos das propriedades monotônicas e cíclicas dos ferros fundidos nodulares." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-03052012-165941/.

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Para o correto dimensionamento da maioria dos componentes estruturais é necessário informações sobre a resposta do material quando submetido à fadiga de alto e baixo ciclo, bem como conhecer as propriedades monotônicas (não-cíclicas) e cíclicas dos materiais. Na literatura são encontradas amplas divulgações de dados sobre diversos materiais de engenharia (Ex. SAE J1099 Technical Report on Fatigue Properties). Porém, quando se trata de ferro fundido nodular estas informações são limitadas, sendo assim, visa-se neste trabalho caracterizar as propriedades monotônicas e cíclicas destes materiais

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Zapletal, Josef. "Nízkocyklové a vysokocyklové únavové vlastnosti ADI." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-233981.

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The thesis is focused on assessment of fatigue behaviour of austempered ductile iron with nodular graphite. Optimal period of transformation was determined based on the best combination of stress and strain characteristics established by tensile test. Cyclic response and low-cycle fatigue life were studied under both stress-control and longitudinal strain-control mode at room temperature. For both modes, shapes of cyclic hardening curves are dependent on stress amplitude. Cyclic deformation curves (CDC) were fitted by power regression function. Results were compared with CDC established by mul

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Ekström, Madeleine. "Oxidation and corrosion fatigue aspects of cast exhaust manifolds." Doctoral thesis, KTH, Mekanisk metallografi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-166274.

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Emission regulations for heavy-duty diesel engines are becoming increasingly restrictive to limit the environmental impacts of exhaust gases and particles. Increasing the specific power output of diesel engines would improve fuel efficiency and greatly reduce emissions, but these changes could lead to increased exhaust gas temperature, increasing demands on the exhaust manifold material. This is currently the ferritic ductile cast iron alloy SiMo51, containing about 4 wt% Si and ~1 wt% Mo, which operates close to its fatigue and oxidation resistance limits at peak temperature (750C). To ensure

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Mariani, Fábio Edson. "Tratamentos térmicos e termoquímicos de boroaustêmpera em ferros fundidos nodulares e caracterização dos produtos resultantes." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-05092014-082721/.

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Amostras de ferros fundidos nodulares ligados com Cu, Cu-Ni ou Cu-Ni-Mo foram austemperadas, boretadas e boroaustemperadas e caracterizadas quanto à dureza e o comportamento ao desgaste microadesivo, tendo sido também estudada a cinética de formação da camada. O método de boretação utilizado foi via líquida em banho de bórax fundido, com tempos de permanência de 2 e 4 horas nas temperaturas de 850, 900 e 950ºC. Procedeu-se o tratamento direto de austêmpera, a partir dessa temperatura, em banhos de sal fundidos nas temperaturas de 240, 300 e 360ºC com tempos de permanência de 4 horas (boroaustê

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"Ductile white cast iron." 2008. http://library.cuhk.edu.hk/record=b5896770.

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Ho, Ching Man = 可柔韌的白鑄鐵 / 何靜雯.<br>Thesis submitted in: November 2007.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2008.<br>Includes bibliographical references (leaves ).<br>Text in English; abstracts in English and Chinese.<br>Ho, Ching Man = Ke rou ren de bai zhu tie / He Jingwen.<br>Chapter Chapter 1: --- Introduction --- p.1<br>Chapter 1.1 --- Introduction of Composites --- p.1<br>Chapter 1.1.1 --- Dispersion-Strengthened composites --- p.2<br>Chapter 1.1.2 --- True Particulate Composites --- p.2<br>Chapter 1.1.3 --- Fiber-Reinforced Composites --- p.2<br>Chapter 1.1.4 --- La

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Shama, Shaik. "Comparison of Mechanical Properties of Austenitic Ductile Cast Iron with Ferritic/Pearlitic Ductile Cast Iron." Thesis, 2017. http://ethesis.nitrkl.ac.in/8480/1/2016_PhD._SShama_613MM3016.pdf.

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Austenitic ductile iron belongs to the family of ductile iron which performs better properties than conventional ductile iron due to its soft matrix. Ductile iron (DI) has got enormous applications in different fields such as wind turbines, automotive components, spun pipe and fittings etc. As mechanical properties are primarily dependent on the matrix structure, different heat treatments are performed to the ductile iron to achieve required matrix. Alloying additions are made to stabilize the matrix structure at all the temperatures. In the present work, investigation has been conducted on me

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Patra, Sanjeev Kumar. "Characterization of Dual Matrix Structured Ductile Iron." Thesis, 2016. http://ethesis.nitrkl.ac.in/8384/1/2016_MT_711MM1087_SKPatra.pdf.

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The dual matrix structured ductile iron consists of a soft phase(ferrite)and a hard phase(martensite).The combination of soft and hard phase increases the toughness and strength significantly and meets the requirement of automotive industries for their application in suspension parts.This investigation relates the variation of mechanical properties of dual matrix structured ductile iron with different ferrite and martensite volume fraction as the microstructure and amount of distribution of these phases control the mechanical properties.The DMS ductile iron was obtained by heating the as cast

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Chou, Jaw-Min, and 周兆民. "Austenitic Transformation in Ferritic Ductile Cast Iron." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/54515720878251638679.

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Panda, Ranjit Kumar. "Effect of copper on austempering behavior of ductile iron." Thesis, 2011. http://ethesis.nitrkl.ac.in/2868/1/thesiss.pdf.

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Even since its discovery in 1948, the use of ductile iron is increasing continuously, this is due to the combination of its various excellent mechanical properties. Excessive amount of research is being carried out to develop even better properties. Austempererd ductile iron is the most recent development in the area of ductile iron or S.G. ron. This is formed by an isothermal heat treatment of the ductile iron. The newly developed austempered ductile iron is now replacing steel in many fields so it has becoming very important to various aspects of this material. In the present work the effe

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Behera, Litu. "Mechanical property investigation of hardened and tempered ductile iron." Thesis, 2014. http://ethesis.nitrkl.ac.in/6374/1/E-31.pdf.

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In their attempt to develop a particular type of cast iron having better mechanical properties than the malleable iron, the scientists ultimately discovered the spheroidal graphite (S.G) Iron. In this type of cast iron, graphite is present in the form of nodules so it doesn’t break the continuity of structure. Moreover due to the regular shape of graphite, it provides ample amount of plasticity unlike gray cast iron where the flake of graphite acts of sharp notches and thus destroy plasticity. Due to its excellent combination of strength, ductility and toughness the S.G Iron is now being widel

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Behera, Gourahari, and Soumya Ranjan Sohala. "Effect of copper on the properties of austempered ductile iron castings." Thesis, 2012. http://ethesis.nitrkl.ac.in/3835/1/2012BTECHTHESIS.pdf.

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Two types of ductile iron has been taken for the present investigation. Both austempering time and temperature are considered as the main variables for structure property correlation of Austempered Ductile Iron. The two types of spheroidal graphite iron (differ by copper percentage) were austempered at four differing austempering temperatures viz. 250oC, 300oC, 350oC and 400oC for 60min, 90 min and 120 min respectively. The effect of austempering variables on the mechanical properties of spheroidal graphite iron was investigated as a function of austempering time and temperature. The cooling r

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Das, Amar Kumar. "Effect of Processing Parameters on Properties of Alloyed Austempered Ductile Iron." Thesis, 2012. http://ethesis.nitrkl.ac.in/5461/1/AKD_M._Tech_(R)_Thesis.pdf.

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Ever since its discovery in 1948, the use of ductile iron is increasing continuously, this is due to the combination of its various excellent mechanical properties of the material. Extensive research is being carried out to develop even better properties. Austempered ductile iron is the most recent development in the area of ductile iron or S.G. iron. This is formed by an isothermal heat treatment of the ductile iron. The newly developed austempered ductile iron is now replacing steel in many fields so it is becoming very important to study various aspects of this material. In the present work

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Oliveira, Carlos Manuel Gomes. "Effect of lanthanum addition in ductile cast iron." Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/89138.

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Misorski, Christopher John. "Solidification developments in heavy section ductile cast iron." 1988. http://catalog.hathitrust.org/api/volumes/oclc/19034680.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1988.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 140-148).

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Oliveira, Carlos Manuel Gomes. "Effect of lanthanum addition in ductile cast iron." Dissertação, 2013. https://repositorio-aberto.up.pt/handle/10216/89138.

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Tangi, Lakshmana Rao. "Effect of processing parameters on austempering behavior of alloyed/unalloyed ductile iron." Thesis, 2012. http://ethesis.nitrkl.ac.in/3880/1/Laxman_Thesis.pdf.

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Ever since its discovery in 1948, the use of ductile iron is increasing continuously due to the combination of its various excellent mechanical properties. Excessive amount of research is being carried out to develop even better properties. Austempererd ductile iron is the most recent development in the area of ductile iron or SG iron. Two types of spheroidal graphite (SG) cast iron samples with different weight percentage of copper were austempered at four different temperatures. The austempering temperatures were 200°C, 300°C, 350°C, 400°C.The influence of austempering process (i.e time and

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Ranjan, Atul, and Manindra Ranjan. "Effect of Isothermal Annealing Temperature and Cooling Rate on Mechanical Properties of Ductile Iron." Thesis, 2013. http://ethesis.nitrkl.ac.in/4893/1/109MM0125.pdf.

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A block of ductile Iron of known composition was procured and samples for various testing were cut out from that block. Tensile test specimens were machined from the block according to the ASTM E8 (Flat sub-size specimen) standard. From a set of nine specimens, three were kept untreated whereas the other six specimens were annealed isothermally following different cooling rates. All the six specimens were heated isothermally to 1000°C and held there for 90 minutes. Out of the six, three specimens were first cooled to 700°C immediately after 90 minutes and held there for 330 minutes and followe

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Kumar, Ravindra. "Effect of Tempering Temperature and Time on Strength and Hardness of Ductile Cast Iron." Thesis, 2015. http://ethesis.nitrkl.ac.in/7285/1/2015_Effect_Kumar.pdf.

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The use of ductile cast iron is as an engineering materials has been increase day by day. it is widely used in manufacturing industry. It have excellent combination of mechanical properties due to same heat treatment process at different time and temperature. It have an excellent combination of tensile strength, wear resistance, good corrosion resistance, good ductility, toughness, impact strength, by using different types of heat treatment process. The effects of tempering temperature and time on the mechanical properties of ductile cast iron is investigated in the current work. The all sampl

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Javaid, Amjad. "Morphological features of spheroidal graphite in ductile cast iron." 1989. http://catalog.hathitrust.org/api/volumes/oclc/20078809.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1989.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 108-113).

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Nikolai, Michael F. "Effects of tinned steel scrap in ductile cast iron." 1994. http://catalog.hathitrust.org/api/volumes/oclc/32845522.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1994.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves vi-vii).

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Simonite, Kenneth G. "An investigation of possible superplastic conditions in ductile cast iron." 1992. http://hdl.handle.net/1993/18686.

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48

Lu, Guan-Long, and 呂冠龍. "Study on the Silicon Solution Strengthened Ferritic Ductile Cast Iron." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8fq8e4.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>105<br>The objective of this research is to evaluate the property characteristics of solution strengthened ferritic ductile iron (SSF), the so-call second generation of ductile irons, with different Si contents, ranging from 4.0 to 4.5 wt%. In addition, the properties of SSF ductile irons (grade EN-GJS-600-10) were compared with the conventional ductile iron grade of EN-GJS-600-3 and the Austempered Ductile Iron (ADI) grade of . The tensile test results of SSF ductile irons show that both the tensile and yield strengths increases, while the elongation decreases, as

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Mohanty, Sabyasachi. "Effect of Micro Constituents on Wear Properties of Alloyed Ductile Iron." Thesis, 2016. http://ethesis.nitrkl.ac.in/8105/2/2016-MT-214MM1436-Micro_constituents.pdf.

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The current study was focused to study the behavior of DI under dry sliding wear condition and observe the effect of micro constituents, achieved by alloy addition and heat treatment processes. To carry out the study two ductile irons with different compositions were chosen, so that effect of chemical composition can be studied. The DI specimens of both alloys were then subjected to annealing, normalizing, quenching & tempering and austempering heat treatment processes to achieve different microstructure and micro constituents for the alloys. The as-cast and heat-treated specimens were then su

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Swain, S. K. "Effect of Chemistry and Processing Variables on the Mechanical Properties of Thin-wall Ductile Iron Castings." Thesis, 2008. http://ethesis.nitrkl.ac.in/1562/1/SUSANTA_THESIS_PDF.pdf.

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Cast iron is an alloy of iron containing more than 2% carbon as an alloying element. It has almost no ductility and must be formed by casting. Ductile iron structure is developed from the melt of cast iron. The presence of silicon in higher amount promotes the graphitization, inhibiting carbon to form carbides with carbide forming elements present. The carbon forms into spheres when Ce, Mg are added to the melt of iron with very low sulphur content. Due to this special microstructure containing graphite in nodular form ductile iron possesses ductility & toughness superior to that of any cast i

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