Log in

Relevant bibliographies by topics / Nodular graphite cast iron

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers

Academic literature on the topic 'Nodular graphite cast iron'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Nodular graphite cast iron.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Nodular graphite cast iron"

1

Lupinca, Cinca Ionel, Marian Dumitru Nedeloni, and Dorian Nedelcu. "Gray Cast Iron Behavior in Cavitation Erosion." Materials Science Forum 782 (April 2014): 269–74. http://dx.doi.org/10.4028/www.scientific.net/msf.782.269.

Full text

Abstract:

The paper presents the cavitation stand used, the work methodology, the trials realized on specimens of gray cast irons, with flake graphite and spheroidal-graphite, which were tested for cavitation erosion during different periods of time of the cavitation attack. Finally, the conclusions were interpreted on the basis of comparative graphics realized at the macro and microstructures level obtained for these two types of cast iron. Of the two types of gray cast iron, the nodular cast iron presents a better cavitation erosion resistance.

APA, Harvard, Vancouver, ISO, and other styles

2

Khan, Fareed Ashraf, and Hasse Fredriksson. "Melt Stirring of Nodular Cast Iron." Materials Science Forum 925 (June 2018): 125–32. http://dx.doi.org/10.4028/www.scientific.net/msf.925.125.

Full text

Abstract:

In this work the effects of stirring/vigorous shearing on matrix and graphite phase in nodular cast iron melt during solidification were studied. Several experiments were conducted for different cooling and stirring times. Samples were prepared and examinations of the microstructure were conducted and compared using Leica Optical Microscope and Scanning Electron Microscope (SEM). In addition, a chemical analysis of the graphite precipitate was performed using EDX equipment mounted on SEM. Oxidation of the melt and formation of oxide nuclei during stirring were observed and analysed. The influence of melt shearing on the structure, nodule count, distribution, area fraction and on overall graphite precipitation was observed and examined with the help of respective computer programs and soft wares. Stirring resulted in increasing the nucleation sites for graphite precipitation thereby increasing the nodule count and area fraction of carbide and transforming the structure from pearlitic matrix to ferritic matrix.

APA, Harvard, Vancouver, ISO, and other styles

3

Vaško, Alan. "Fatigue Properties of Synthetic Nodular Cast Irons." Key Engineering Materials 635 (December 2014): 5–8. http://dx.doi.org/10.4028/www.scientific.net/kem.635.5.

Full text

Abstract:

The contribution deals with comparison of microstructure, mechanical properties and fatigue properties of synthetic nodular cast irons with a different ratio of steel scrap in a charge. Chemical composition of individual melts was regulated alternatively by ferrosilicon (FeSi) and carburizer or metallurgical silicon carbide (SiC). The paper shows positive influence of SiC additive on the microstructure, mechanical properties as well as fatigue properties of nodular cast iron. The additive of metallurgical silicon carbide in analysed specimens increases the content of ferrite in the matrix, decreases the size of graphite and increases the average count of graphitic nodules per unit of area. Consequently, the mechanical and fatigue properties of nodular cast iron are improved.

APA, Harvard, Vancouver, ISO, and other styles

4

Muhmond, Haji Muhammad, and Hasse Fredriksson. "Graphite Growth Morphologies in Cast Iron." Materials Science Forum 790-791 (May 2014): 458–63. http://dx.doi.org/10.4028/www.scientific.net/msf.790-791.458.

Full text

Abstract:

Graphite growth morphology was studied by using InLense detector on FEG-SEM after performing ion etching on the samples. Star like and circumferential growth mechanism of graphite was observed in the graphite nodules. Pure ternary alloy of hypo eutectic and hyper eutectic composition was treated with pure Mg, Ca and Sr, to study the effect of O and S concentration in the melt, on the transition of graphite morphology from nodular to vermicular/compacted and flake graphite. The change in the melt composition between the austenite dendrites due to micro-segregation of S, O and inoculants and their possible effects on the transition of graphite morphologies as well as the nucleation of new oxides/sulfides particles is discussed with the help of thermodynamics.

APA, Harvard, Vancouver, ISO, and other styles

5

Celis, Mayerling Martinez, Bernadette Domengès, Eric Hug, and Jacques Lacaze. "Analysis of Nuclei in a Heavy-Section Nodular Iron Casting." Materials Science Forum 925 (June 2018): 173–80. http://dx.doi.org/10.4028/www.scientific.net/msf.925.173.

Full text

Abstract:

The microstructure of heavy section nodular graphite cast irons often presents a bimodal distribution of nodule size associated with so-called primary and secondary graphite nucleation. It has been found that the nuclei in both types of nodules consist mainly in magnesium sulphide. However, nuclei in primary nodules contain some traces of calcium and are thus related with the inoculation treatment. On the contrary, nuclei in secondary nodules do not contain any element that could be associated to inoculation. It is suggested they form in the late stage of the eutectic reaction as a result of microsegregation build-up in magnesium and sulphur.

APA, Harvard, Vancouver, ISO, and other styles

6

Li, Bao Yuan, Guo Shang Zhang, Shi Zhong Wei, and Ji Wen Li. "Research on Heat Resistance of As-Cast Ferritic Nodular Iron." Advanced Materials Research 1095 (March 2015): 184–87. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.184.

Full text

Abstract:

This article focuses on research into thermal shock fatigue resistance and oxidation resistance of as-cast ferritic nodular iron. The results show that the number of cycles required to crack nodular iron under the action of thermal stress is significantly higher than that of grey cast iron, and the rate at which cracks spread is lower compared with that of grey cast iron. When graphite is transformed from flakes into nodules, its decreased connectivity impedes the flow of oxygen during oxidization, thereby improving its oxidation resistance.

APA, Harvard, Vancouver, ISO, and other styles

7

Castro, M., M. Herrera-Trejo, J. L. Alvarado-Reyna, C. L. Martínez-Tello, and M. Méndez-Nonell. "Characterization of graphite form in nodular graphite cast iron." International Journal of Cast Metals Research 16, no. 1-3 (August 2003): 83–86. http://dx.doi.org/10.1080/13640461.2003.11819563.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Malage, Abhijit, Priti P. Rege, and Manoj J. Rathod. "Automatic quantitative analysis of microstructure of ductile cast iron using digital image processing." Metallurgical and Materials Engineering 21, no. 3 (September 30, 2015): 155–66. http://dx.doi.org/10.30544/77.

Full text

Abstract:

Ductile cast iron is preferred as nodular iron or spheroidal graphite iron. Ductile cast iron contains graphite in form of discrete nodules and matrix of ferrite and perlite. In order to determine the mechanical properties, one needs to determine volume of phases in matrix and nodularity in the microstructure of metal sample. Manual methods available for this, are time consuming and accuracy depends on expertize. The paper proposes a novel method for automatic quantitative analysis of microstructure of Ferritic Pearlitic Ductile Iron which calculates volume of phases and nodularity of that sample. This gives results within a very short time (approximately 5 sec) with 98% accuracy for volume phases of matrices and 90% of accuracy for nodule detection and analysis which are in the range of standard specified for SG 500/7 and validated by metallurgist.

APA, Harvard, Vancouver, ISO, and other styles

9

Qi, Xiao Ben, and Shi Gen Zhu. "Study on Electric Contact Heating for Nodular Cast Iron 600-3." Applied Mechanics and Materials 152-154 (January 2012): 316–21. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.316.

Full text

Abstract:

The method of electric contact heating for nodular cast iron was based on the application of the contact resistance heating between the electrode and work piece to change the characteristics of the surface. The effects of processing parameters on the width and depth of modified layer were analyzed, and among the experimental factors, the electric current had the largest effect than the others. Optical microscope was used to describe the microstructure transformation and identify the phases in the modified layer. Results showed that a cementite-martensite microstructure in the melted zone and a martensite-ledeburite-ferrite microstructure with graphite nodules in the hardened zone have been observed; especially two typical hardened shells around graphite are achieved in the hardened zone, which are ledebruite-martensite shell and single martensite shell around graphite. The effects of the changed microstructures were additionally verified by microhardness measurements in the modified zone. The microhardness of the nodular cast iron was found to be significantly increased after electric contact heating.

APA, Harvard, Vancouver, ISO, and other styles

10

Heckmann, C. J., W. Stets, and G. Wolf. "Plate Fracture of Nodular Cast Iron." Key Engineering Materials 457 (December 2010): 367–73. http://dx.doi.org/10.4028/www.scientific.net/kem.457.367.

Full text

Abstract:

Plate fracture is a defective fracture structure in nodular cast iron that can be found especially in the transition area of feeder, feeder neck and the cast part itself. It occurs rather spontaneously due to the fact that the exact reason for it is still unknown. The microstructure of the casting in the area of plate fracture comprises aligned graphite nodules in combination with a pronounced dendritic microstructure as characteristical features. A series of casting trials was performed in which plate like samples were produced. It could be shown by means of metallographic investigation of these samples in combination with the simulation of the solidification that specific local conditions during the solidification are the metallurgical reasons for the appearance of plate fracture. These specific conditions were the local temperature gradient and the velocity of the liquid/solid interface.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Nodular graphite cast iron"

1

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Martinez, Thomas. "Etude de l'endommagement lors du démasselotage à chaud de bielles en fonte GS ADI moulées forgées." Thesis, Reims, 2016. http://www.theses.fr/2016REIMS002/document.

Full text

Abstract:

Les travaux de cette thèse ont été initiés par la volonté industrielle de lever le verrou technologique du démasselotage à chaud de bielles en fonte GS. Ces bielles sont obtenues par un procédé de fabrication hybride innovant mêlant forgeage et fonderie en moule métallique. Ce procédé exige que le démasselotage soit effectué dans la « chaude de coulée » lorsque la fonte GS est en phase austénitique. La découpe de la fonte dans ces conditions de température fait apparaître des défauts majeurs sur les surfaces découpées préjudiciables à la suite du process. Pour pouvoir répondre à cette problématique, une étude est menée sur la caractérisation du comportement et de l’endommagement de la fonte GS dans les conditions de température du process. Une attention particulière est portée sur l’influence de la microstructure nodulaire sur les mécanismes de la rupture. Afin de se doter d’outils de simulation pour mettre au point le processus de démasselotage à chaud, les paramètres du modèle de comportement et d’endommagement de Gurson-Tvergaard-Needleman appliqués à la fonte GS sont identifiés par méthode inverse. Enfin, un plan d’expérience est déployé sur un démonstrateur de découpe instrumenté afin d’obtenir la configuration optimale des paramètres process pour une découpe sans défaut. Cette dernière étude met en avant la présence d’une transition d’un mode de rupture ductile à fragile lors de l’apparition des défauts de démasselotage
This work was initiated by the technological problematic of hot trimming of nodular cast iron connecting rods. These connecting rods are obtained by an innovative hybrid process that combines forging and metal mold casting. This process requires the trimming to be conducted at high temperatures in the is the austenitic phase of the cast iron. Hot trimming of cast iron brings up major defects on the cut surfaces which are detrimental to the continuing process. To address this problem, a study is conducted on the characterization of the mechanical behavior of nodular cast iron in the process temperature conditions. A particular attention is paid to the influence of the nodular microstructure on the failure mechanisms. To develop simulation tools for nodular cast iron hot trimming, the parameters of Gurson-Tvergaard-Needleman model are identified by inverse method for our material. Finally, a design of experiment is deployed using an instrumented demonstrator to obtain the optimum parameters configuration for a maximized cut surface quality. This latest study highlights the presence of a transition from ductile to brittle mode of failure leading to the hot trimming defects

APA, Harvard, Vancouver, ISO, and other styles

3

Musilová, Iveta. "PROGRESIVNÍ VÝROBNÍ POSTUPY A MODELOVÁNÍ STRUKTUR A VLASTNOSTÍ LITIN S KULIČKOVÝM GRAFITEM." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-233882.

Full text

Abstract:

The thesis is concerned with relationships between progressive technological processes of spheroidal graphite cast iron’s production and their structural properties. The aim of the work is to explain causal relationship between parameters of the proposed manufacturing technology of the iron type given (involving selected variants of modification and inoculation of melt and the parameters of melt crystallization, solidification and cooling down in a mould), their structure and even chemical heterogeneity of elements in this structure. For close specification of presented relationships three-dimensional model of spheroidal graphite growth was used, which was developed at the Brno University of Technology, Faculty of Mechanical Engineering. Its usability in praxis has been verified on the basisis of the application of this model on experimentally acquired data. The U GRAFIT 20 model of the authors Stránský and Million counting segregation in the frame of eutectic cell has not still been used for prediction of segregation in real condition in greater extent. On the basis of the above mentioned model microsegregation within “on average” of the cell has been discovered during experimental melts. Microsegregation has been described by segregation and heterogeneity indexes. Calculated values of segregation and heterogeneity indexes have been compared with experimentally verified values. On the basis of comparison of calculated and measured values the possibility of further usage of the mentioned model in praxis has been explored.

APA, Harvard, Vancouver, ISO, and other styles

4

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

Full text

Abstract:

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 ductile iron begins with the independent nucleation of austenite and graphite in the melt. Later the graphite nodules are enveloped by austenite, and further solidification takes place by the thickening of the austenite layers enveloping the graphite. Isolated pockets of interdendritic melt are the last material to solidify. On the basis of the measured segregation of the different alloying elements, the mechanisms by which the segregation affects the microstructure are considered, and an explanation for the effect of segregation on the hardenability of ductile iron is proposed. A mathematical model of the solidification of eutectic ductile iron is formulated which includes heat flow, nucleation and growth of graphite nodules, and the segregation of Si. The model uses equilibrium temperatures given by the ternary Fe-C-Si equilibrium diagram. Using the mathematical model, cooling curves, nodule count and nodular size distribution are determined as a function of position in the casting sample. The results are compared to measured temperatures, nodule count and nodule size in rod castings of 12.5, 20 and 43mm radius. There is good agreement between the calculated and measured values for the 43mm radius rod, and not quite good agreement for the rods of smaller radii. The changes in solidification predicted by the model when some solidification parameters are varied are consistent with experimental observations with the same variation in the parameters.
Applied Science, Faculty of
Materials Engineering, Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

5

Khan, Fareed Ashraf. "Some aspects of convection as well as graphite and carbide formations during casting." Licentiate thesis, KTH, Metallernas gjutning, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228388.

Full text

Abstract:

It is an established fact that segregation during casting affects the physical properties of carbon-based ferro alloys; this motivates the study of the segregation behaviour of carbon and carbide-forming solute elements. In this context, this thesis investigates two different situations: the effects of cooling rate and turbulence on the precipitation behaviour of the graphite nodules in nodular cast iron; the nature of carbide precipitation in a bearing steel grade and the effects of subsequent soaking on these carbides. The structures of boiling water reactor inserts cast by the uphill and downhill casting of nodular cast iron were examined. The samples were taken from representative locations in the top, middle and bottom cross sections of the castings. It was observed that in uphill-cast inserts the nodules were larger but fewer in number the bottom section, whereas in downhill-cast inserts the nodules in the bottom section were smaller, but greater in number. Variation in volume fraction of the graphite nodules across the inserts was also observed. The probable cause of this variation was the difference in cooling rate in different sections of the insert. Between the steel tubes located at the central part of the casting, the fraction of graphite was lower, which could be the result of carburization of the steel tubes. To study the effects of melt stirring during the solidification of nodular cast iron, several experiments were conducted at variable cooling rates and for different stirring times. Examination of the microstructure was conducted using Light Optical Microscope (LOM) and Scanning Electron Microscope (SEM). It was observed that during stirring the melt oxidized and oxide nuclei were formed. The number of nucleation sites for the precipitation of graphite nodules increased, which raised the nodule count and the fraction of the graphite precipitated. The matrix transformed from pearlite to ferrite, which could be due to the fact that more carbon had diffused out of the matrix. The segregation behaviour in hypereutectoid bearing steel produced by ingot casting was also studied. The effects of soaking on micro and macro segregation was investigated in samples taken from as cast and soaked ingots; emphasis was laid on the bulk matrix and A-segregation channels. Samples were also taken from ingots which were soaked and then hot worked. The micro and macro examination of the microstructure was conducted using LOM and SEM. Quantitative and qualitative composition analysis was performed using Energy-dispersive X-ray spectroscopy (EDX) and an electron micro probe analyzer (EMPA). It was observed that M3C, M2C and M6C had precipitated. The carbide morphology in the bulk matrix was different to that in the A-segregation channels. All the primary carbides in the bulk matrix were found to have dissolved after 4 hours of soaking at 1200oC.
Det är ett faktum att segringar som uppstår under gjutning påverkar materialegenskaperna hos kolbaserade järnlegeringar; detta utgör motivationen till studien av segringsuppträdandet hos kol och karbidbildande ämnen. Denna avhandling behandlar två olika aspekter inom ramen för detta ämne: påverkan av kylningshastighet och turbulens på kärnbildningen av grafitnoduler i nodulärt gjutjärn samt karbidbildning i kullagerstål och dess påverkan på den efterföljande värmebehandlingen av dessa karbider. Strukturen hos rör till vattenkokare som tillverkats av nodulärt gjutjärn som gjutits med fyllning från botten eller från toppen undersöktes. Prover togs från representativa tvärsnittspositioner från toppen, mitten och botten av de gjutna ämnena. Resultaten visade att användandet av bottenfyllda kokiller gav upphov till större men färre karbider i nedre delen av ämnet, medans användandet av toppfyllda kokiller gav upphov till mindre men fler karbider i nedre delen av ämnet. Variationer av volymfraktionen av grafitnoduler längs tvärsnitten observerades också. Den mest sannolika orsaken till denna variation var skillnaden i kylhastighet i de olika områdena av tvärsnitten. Hos rör tillverkade av det centrala delen av ämnet så var fraktionen grafit lägre, vilket kan bero på en uppkolning av rören. Ett flertal experiment utfördes med varierande kylningshastigheter och olika omrörningstider för att studera inverkan av omrörning av smältan på stelningen av nodulärt gjutjärn. Studier av mikrostrukturen genomfördes med ljusoptisk mikroskopi och svepelektronmikroskopi. Resultaten visade att smältan oxiderades under omrörningen, vilket resulterade i bildandet av oxider. Detta ledde till en ökning av kärnbildningsområden för grafitnoduler, vilket ledde till en ökning av antalet noduler samt fraktionen av grafit som fälldes ut. Strukturen omvandlades från perlit till ferrit, vilket troligen orsakades av att kol hade diffunderat ut från strukturen. Segringsbeteendet hos hypereutektoida kullagerstål tillverkade genom götgjutning undersöktes också. Effekten av värmebehandling på mikro- och makrosegringar undersöktes i prover tagna från gjutna och värmebehandlade ämnen. Fokus var på att studera strukturen i ämnena samt A-segringar. Dessutom togs prover från ämnen som först värmebehandlats och därefter varmbearbetats. Både mikro- och makroundersökningar av mikrostrukturen utfördes med ljusoptisk mikroskopi och svepelektronmikroskopi. Dessutom så genomfördes kvantitativa sammansättningsbestämningar med energidispersiv röntgenspektroskopi och elektronmikroprobsanalys. Resultaten visade att M3C, M2C och M6C karbider hade fällts ut. Karbidmorfologin i huvuddelen av strukturen skiljde sig från den som återfanns i A-segringar. Samtliga primära karbider i huvuddelen av strukturen hade lösts upp efter 4 timmars värmebehandling vid 1200oC.

QC 20180523

APA, Harvard, Vancouver, ISO, and other styles

6

Lukhi, Mehul. "Micromechanical Simulation of Fatigue in Nodular Cast Iron." Technische Universität Bergakademie Freiberg, 2020. https://tubaf.qucosa.de/id/qucosa%3A72791.

Full text

Abstract:

In the present thesis, fatigue behavior of nodular cast iron (NCI) is investigated using micromechanical simulations. An elastic-plastic porous material experiences an increase in a void volume fraction with each cycle of loading. This is called void ratchetting. The hypothesis of this thesis is to explain the fatigue failure of NCI using void ratchetting mechanism. The strain-life, stress-life, notch support effect, and fatigue crack growth are studied using the micromechanical simulations. In all these studies, matrix material is defined as an elastic-plastic with isotropic/kinematic hardening. No damage law is used to define material degradation. The axisymmetric cell model is developed to study strain-life and stress-life approaches for fatigue. The cell model is subjected to cyclic loading and cycle by cycle simulations are carried out until failure. The failure of the cell model is defined based on the drop in the macroscopic response of the cell model. The notch support effect is investigated using a 2D plane strain model within stress-life concept. From the simulation results, strain-life and stress-life curves are extracted, and they are in qualitative and quantitative agreement with experimental data collected from literature. The fatigue crack growth is studied using a micromechanical cell model under small scale yielding conditions. The graphite particles are considered as voids, and they are resolved discretely in fracture process zone. The region outside of the fracture process zone is considered as a homogenized medium. When positive alternating loads are applied, ligaments in the fracture process zone show ratchetting behavior, which is responsible for an effective fatigue crack growth. This mechanism is relevant for the fatigue crack growth in NCI. The 2D plane strain boundary layer model is able to predict the effect of load ratio on threshold for the fatigue crack growth and the fatigue crack growth rate. The fatigue crack growth rate curves obtained from the simulations are compared with experimental data. It is essential to note that the void ratchetting (plastic collapse of the intervoid ligaments) is a crucial mechanism in NCI and more focus should be given to this mechanism as it is simple to implement and gives satisfying simulation results.

APA, Harvard, Vancouver, ISO, and other styles

7

Westphal, Mark Emil. "Fracture toughness of coral graphite cast iron." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/16892.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

MELLO, CARLOS ALBERTO TORRES DE. "FATIGUE LIFE OF A FERRITIC NODULAR CAST IRON OF DIFFERENT MICROSTRUCTURES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=3721@1.

Full text

Abstract:

Esta pesquisa teve como objetivos promover variações microestruturais em um ferro fundido nodular ferrítico tipo ASTM A536 60-40-18, pelo do uso de resfriadores durante a solidificação do material e pela adoção de tratamentos térmicos pós-fundição, bem como avaliar a influência de tais variações microestruturais sobre as propriedades mecânicas e vida em fadiga do material. Inicialmente, amostras do material foram fundidas em areia com e sem o uso de resfriadores. Após a fundição, algumas amostras de ambas as condições de resfriamento sofreram normalização, enquanto outras foram recozidas, perfazendo seis diferentes condições microestruturais: sem resfriador bruta de fundição (SRB); sem resfriador normalizada (SRN); sem resfriador recozida (SRR); com resfriador bruta de fundição (CRB); com resfriador normalizada (CRN) e com resfriador recozida (CRR). Em seqüência, corpos de prova de todas as condições mencionadas acima foram ensaiados em tração e, posteriormente, sofreram análises metalográficas qualitativas e quantitativas. Dando continuação a etapa experimental, levantaramse as curvas tensão versus número de ciclos para a falha das condições microestruturais SRB, SRR, CRB e CRR, por meio de ensaios de fadiga em flexão rotativa. A vida em fadiga do material também foi relacionada com às características metalúrgicas de cada condição.
The objectives of the present work were to promote microstructural variations in an ASTM A 536 60-40-18 ferritic nodular cast iron, making use of cast coolers during and adopting heat treatments after casting, as well as to evaluate the influence of the microstructural variations on the mechanical properties and fatigue life of the material. Initially, samples of the material were cast in sand moulds with and without internal coolers. After casting, a number of samples in both cooling conditions were subjected to normalizing and annealing heat treatments and, therefore, six different microstructural conditions were obtained: as- cast without cooler (SRB), normalized without cooler (SRN), annealed without cooler (SRR), as-cast with cooler (CRB), normalized with cooler (CRN) and annealed with cooler (CRR). Tensile test were carried out on specimens representing the above mentioned conditions and their microstructures were analysed by qualitative and quantitative metallography. In the sequence of the experimental procedure, rotating bend fadigue test were performed in order to establish the stress-life curves for the SRB, SRR, CRB and CRR microstructural conditions. The fadigue life of the material was also related to the metallurgical characteristics of each condition. The metallographic analysis has indicated that the use of coolers increases the number of graphite nodules, reduces the graphite nodule size and otimizes the spherical morphology. However, these microstructural modifications seam to have no significant influence on the mechanical properties of the material. As to the effect of normalizing annealing, boht treatments not imply in significant changes in the mechanical properties of the as-cast conditions. Regarding the fadigue resistance of the material in the as-cast conditions, the CRB sample showed a longer fatigue life than the SRB samples and this performance under cyclic loading was attributed to the fact that the CRB condition is characterized by a higher number of graphite nodules of class VI. A comparison between the as-cast and annealed conditions indicated that the microstructural conditions SRR and CRR presented a lower fatigue resistance than the conditions SRB and CRB, respectively. This behaviour was associated with the microstructural features of the as-cast conditions, namely the smaller graphite nodule size, the higher microhardness of the matrix and the presence of the bull`s-eye structure. Finally, the experimental stress-life curves were modelled by means of Coffin-Manson law, which was considered efficient in the fadigue life data of ferritic nodular cast iron.

APA, Harvard, Vancouver, ISO, and other styles

9

Franklin, Steven E. "A study of graphite morphology control in cast iron." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/32998.

Full text

Abstract:

The objectives of the research project were to gain a deeper understanding of the factors influencing the graphite morphology in cast iron; particularly the role of different solute elements in relation to the industrial manufacture of compacted graphite iron. A number of melt treatment processes were assessed for their abilities to produce low nodularity compacted graphite microstructures over a range of casting section thicknesses. In this respect, the magnesium-titanium method was found to be superior to treatment using cerium Mischmetall and calcium additives; and very promising results were obtained with methods using zirconium as a major constituent of the treatment alloy. Scanning electron microscopy, secondary ion mass spectrometry and X-ray microanalysis were used to study the structural characteristics of different cast iron microstructures and the elemental distributions of important solutes between the phases. This information was used to clarify the role of the main solute elements in graphite morphology control and to assess current graphite growth theories.

APA, Harvard, Vancouver, ISO, and other styles

10

Castillo-Bozzo, Ricardo N. "A fracture mechanics study of flake graphite cast iron." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37651.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Nodular graphite cast iron"

1

Dorazil, Eduard. High strength austempered ductile cast iron. 2nd ed. Prague: Academia, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Blackman, T. N. Graphite flotation in ductile iron castings: AFS sponsored research. Des Plaines, Ill: American Foundrymen's Society, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Cochard, Valéry. Inoculation of spheroidal graphite cast iron. Birmingham: University of Birmingham, 1995.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Lerner, Yury S. Modern casting of ductile iron. Schaumburg, Ill: American Foundry Society, 2006.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Rimmer, Arron Laurance. Austempering of an unalloyed compacted graphite cast iron. Manchester: University of Manchester, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Arifin, Ir Bustanul. The role of aluminium in inoculation of spheroidal graphite cast iron. Birmingham: University of Birmingham, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

V, Kalaĭda V., ed. Prochnostʹ i treshchinostoĭkostʹ chugunov s sharovidnym grafitom. Kiev: Nauk. dumka, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Wear in nodular cast iron. Alvechurch, Birmingham: BCIRA, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

modern casting of ductile iron. librari amazing, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

V, Zakharchenko Ė, and Instytut problem lytti͡a︡ (Akademii͡a︡ nauk Ukraïnsʹkoï RSR), eds. Otlivki iz chuguna s sharovidnym i vermikuli͡a︡rnym grafitom. Kiev: Nauk. dumka, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Nodular graphite cast iron"

1

Parent-Simonin, S., J. Fargues, and J. F. Flavenot. "Shot Peening of Nodular Cast Iron." In International Conference on Residual Stresses, 883–88. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1143-7_147.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Pero-Sanz Elorz, José Antonio, Daniel Fernández González, and Luis Felipe Verdeja. "Spheroidal Graphite Cast Irons (or Ductile Cast Iron)." In Physical Metallurgy of Cast Irons, 105–40. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97313-5_7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hallstein, Rolf, Dietmar Eifler, Detlef Löhe, and Eckard Macherauch. "Thermal Fatigue of Pearlitic Nodular Cast Iron." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3, 180–85. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2860-5_30.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Zheng, Jin, Haibin Zuo, Jianliang Zhang, and Fengguang Li. "Thermal Test of Nodular Cast Iron Cooling Stave." In Advances in the Science and Engineering of Casting Solidification, 407–12. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093367.ch48.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Zheng, Jin, Haibin Zuo, Jianliang Zhang, and Fengguang Li. "Thermal Test of Nodular Cast Iron Cooling Stave." In Advances in the Science and Engineering of Casting Solidification, 407–12. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48117-3_48.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Berdin, C., and C. Prioul. "Damage Kinetics and Fracture Toughness of Nodular Cast Iron." In Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, 154–59. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527606157.ch24.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Muhmond, H. M., and H. Fredriksson. "Graphite Growth Morphologies in High Al Cast Iron." In Advances in the Science and Engineering of Casting Solidification, 323–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093367.ch38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Muhmond, H. M., and H. Fredriksson. "Graphite Growth Morphologies in High Al Cast Iron." In Advances in the Science and Engineering of Casting Solidification, 323–30. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48117-3_38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Górny, Marcin. "General Characteristic of the Ductile and Compacted Graphite Cast Iron." In Microstructure and Properties of Ductile Iron and Compacted Graphite Iron Castings, 109–23. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14583-9_6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kubicki, Boguslaw, and Dody Prayitno. "Microstructural Aspects of Endurance Limit of the Nodular Cast Iron." In Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, 147–53. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527606157.ch23.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Nodular graphite cast iron"

1

Neyhouse, Jeffrey R., Jose M. Aurrecoechea, J. Preston Montague, and John D. Lilley. "Cast Iron-Nickel Alloy for Industrial Gas Turbine Engine Applications." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68837.

Full text

Abstract:

Austenitic ductile iron castings have traditionally been used for gas turbine exhaust components that require castability, good machinability, low thermal expansion, and high strength at elevated temperatures. The achievement of optimum properties in austenitic ductile irons hinges on the ability of the foundry to produce nodular graphite in the microstructure throughout the component. In large, complex components, consistently producing nodular graphite is challenging. A high-nickel steel alloy that is suitable for sand castings has been recently developed for industrial gas turbine engine applications. The alloy exhibits similar mechanical and physical properties to austenitic ductile irons, but with improved processability and ductility. This alloy is weldable and exhibits no secondary graphite phase. This paper presents the results of a characterization program conducted on a 35% nickel, high-alloy steel. The results are compared with an austenitic ductile iron of similar composition. Tensile and creep properties from ambient temperature to 760°C (1400°F) are included, along with fabrication experience gained during the manufacture of several sand cast components at Solar Turbines Incorporated. The alloy has been successfully adopted for gas turbine exhaust system components and other applications where austenitic ductile irons have traditionally been utilized. The low carbon content of austenitic steels permits improved weldabilty and processing characteristics over austenitic ductile irons. The enhancements provided by the alloy indicate that additional applications, as both austenitic ductile iron replacements and new components, will arise in the future.

APA, Harvard, Vancouver, ISO, and other styles

2

Patel, Dhruv, Devendra Parmar, and Siddharthsinh Jadeja. "Influence of Ca-Ba and Sr Base Inoculants on Metallurgical and Mechanical Properties of Grey and Ductile Cast Irons." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86448.

Full text

Abstract:

Microstructural adaptation of cast iron alloys by inoculation is a well-known practice to swell their mechanical properties. In foundries, several inoculants have been used to refine grain structure, and to obtain uniform distribution of graphite flakes. Inoculation is one of the most critical steps in cast iron production. The effectiveness of inoculants depends on melt temperature, method of addition, type of inoculants, and holding time. In this paper, the effect of Ca-based, Ba-based, Ca-Ba based and Sr-based inoculants on microstructure and tensile properties of grey cast iron IS-210 and spheroidal graphite iron IS-1862 is reported. Results showed both Ca and Ba based inoculants were effective in obtaining uniform distribution of flaky and nodular graphite in IS-210, and IS-1862 cast irons, respectively. But in a case of Sr-based inoculant were highly effective for increase the nodularity of SG cast iron as well as succeed supreme yield strength for both grey and ductile cast iron. The amounts of ferrite in the as-cast matrix are excess with controlled granulometry for elimination of primary carbide in Sr-based inoculant.

APA, Harvard, Vancouver, ISO, and other styles

3

marcondes, paulo victor, Paulo Soares, Ricardo Torres, and Sergio Manenti. "Graphite size and distribution of nodular cast iron obtained by continuous casting." In 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-2428.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Chen Zhibin, Yu Yongquan, Chen Heqing, and Yang Shaomin. "Fuzzy recognition of graphite morphology in nodular cast iron based on evolution strategy." In Proceedings of 2005 International Conference on Machine Learning and Cybernetics. IEEE, 2005. http://dx.doi.org/10.1109/icmlc.2005.1527811.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Kavicka, Frantisek, Josef Stetina, Karel Stransky, Jana Dobrovska, Bohumil Sekanina, and Jaromir Heger. "A Numerical Model of Solidification of a Massive Casting From Malleable Cast-Iron." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56043.

Full text

Abstract:

A numerical model of the temperature field associated with solidifying castings aims to achieve two general goals: directed solidification (as the primary condition for a healthy casting), and optimisation of the technology of casting together with the preservation of optimum utility properties of the product. A specific goal of this model is the selection and optimisation of the method of cooling to shorten the solidification time to obtain a spherical graphite structure with good nodular properties, and with a sufficient density of graphite spheres (cells). The speed of cooling during solidification and cooling in the mould is therefore a significant quantity influencing the formation of the structure. The achievement of these goals depends on the ability to analyse and, successively, to control the effect of the main factors which characterise the solidification process or accompany it. The analysis of the quantities is focused on determining the causes of the formation of the heterogenic temperature field during casting, considering the phase and structural changes. It is also focused on the thermokinetics of the formation of shrinkage porosities and cavities and on the prediction of their formation. This leads to the optimisation of the shape and sizes of the risers, the method of insulation, the treatment of the level. The model is applicable to various shapes of castings. The software is capable of analysing the temperature field of the actual casting, as well as the temperature field of the mould and cores, including the dependence of their material. It is also capable of considering non-linearity, i.e. the dependence of the thermophysical properties—namely the material of the casting and mould on the temperature, as well as the dependence of the heat transfer coefficients on the surface and interface temperature. The model is also equipped with an original network generator (pre-processing) as well as graphical output (post-processing).

APA, Harvard, Vancouver, ISO, and other styles

6

Kavicka, Frantisek, Josef Stetina, Karel Stransky, Jana Dobrovska, Bohumil Sekanina, and Jaromir Heger. "A Numerical Model of Solidification of a Massive Casting From Malleable Cast-Iron." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2587.

Full text

Abstract:

This numerical model of the temperature field of solidifying castings aims to achieve two general goals: directed solidification (as the primary condition for a healthy casting) and optimization of the technology of casting together with the preservation of optimum utility properties of the product. A specific goal of this model is the selection and optimization of the method of cooling to shorten the solidification time in order to obtain a spherical graphite structure with good nodular properties and with a sufficient density of graphite spheres (cells). The speed of cooling during solidification and cooling in the mould is therefore a significant quantity influencing the formation of the structure. The achievement of these goals depends on the ability to analyze and, successively, to control the effect of the main factors which characterize the solidification process or accompany it. The analysis of the quantities is focused on determining the causes of the formation of the heterogenic temperature field within the actual casting during casting, considering the phase and structural changes. It is also focused on the thermokinetics of the formation of shrinkage porosities and cavities and on the prediction of their formation. This leads to the optimization of the shape and sizes of the risers, the method of insulation, the treatment of the level, etc. The model is applicable to various shapes of castings. The software is capable of analyzing the temperature field of the actual casting, as well as the temperature field of the mould and cores, including the dependence of their material. It is also capable of considering non-linearity, i.e. the dependence of the thermophysical properties—namely the material of the casting and mould on the temperature, as well as the dependence of the heat transfer coefficients on the surface and interface temperature. The model is also equipped with an original network generator (pre-processing) as well as graphical output (post-processing).

APA, Harvard, Vancouver, ISO, and other styles

7

Ben Tkaya, M., M. El Mansori, and H. Zahouani. "On Some Tribological Effects of Graphite Nodules in Belt Grinding of SG Cast Iron: Finite Element Analysis and Experimental Verification." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59257.

Full text

Abstract:

In this paper a 2D micromechanical model with two phases of elasto-plastic graphite and elasto-plastic matrix was developed to simulate the abrasive wear behaviour of ductile iron. The matrix elastic modulus is degraded once the ultimate strength is reached. The graphite phase was found to be worn rapidly on surface and seriously deformed beneath the worn surface. A number of cracks initiated at the graphite-matrix boundaries were also found on the subsurface. The finite element results were then compared with experimental results. They showed that different wear mechanisms occurred as a function of the attack angle of a single grit and the applied load. Severe wear caused plastic flow and material removal occurred by microcutting and microploughin.

APA, Harvard, Vancouver, ISO, and other styles

8

Purwadi, Wiwik, Beny Bandanadjaja, Ari Siswanto, and Dewi Idamayanti. "Spot welding of bimetallic white cast iron-nodular cast iron." In HUMAN-DEDICATED SUSTAINABLE PRODUCT AND PROCESS DESIGN: MATERIALS, RESOURCES, AND ENERGY: Proceedings of the 4th International Conference on Engineering, Technology, and Industrial Application (ICETIA) 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5042857.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

DuQuesnay, D. L., M. T. Yu, T. H. Topper, and B. J. Dabell. "Fatigue Evaluation of a Nodular Cast Iron Component." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1992. http://dx.doi.org/10.4271/920669.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Hrdina, Daniel, Steffen Rudolph, George Ianus, and Yoshiyuki Iwasaki. "Nodular cast iron pistons for Medium Duty Applications." In WCX World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/2018-01-1275.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!