Academic literature on the topic 'Cast-iron Ductility'

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Journal articles on the topic "Cast-iron Ductility"

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Солдатов, Валерий, Valeriy Soldatov, Дмитрий Илюшкин, Dmitriy Ilyushkin, Олег Петраков, and Oleg Petrakov. "INVESTIGATION OF WHITE ALLOYED CAST IRON DUCTILITY." Bulletin of Bryansk state technical university 2019, no. 2 (February 19, 2019): 28–32. http://dx.doi.org/10.30987/article_5c652633961a58.10645526.

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Mironova, Tatiana, and Svetlana Proidak. "Peculiarities of Alloying Effect on the Eutectic Cementite Behavior Under Hot Rolling." New Trends in Production Engineering 2, no. 2 (December 1, 2019): 289–300. http://dx.doi.org/10.2478/ntpe-2019-0093.

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Abstract Currently, cast iron remains one of the major modern casting materials in metallurgy and machine-building industry and is sure to take the lead in the future. Chilled cast iron has high hardness and wear resistance due to a large number of carbide phases in its structure. However, low ductility and impact hardness essentially limit its applicability in terms of processing. Hot plastic working, under which the eutectic net crushing is observed, appears to be one of the most effective means of the eutectic alloy products shape and microstructure transformation. Chilled cast iron properties fundamentally improve after hot plastic working: ductility, strength and impact hardness increase by 2-3 times on retention of the high hardness factor. Chilled cast iron ductility increase can be attained when using phase transformations in eutectic cementite under lean alloying with carbide forming elements. The purpose of the paper is to study alloying effect on the chilled cast iron ductility as well as eutectic cementite behavior under hot rolling. In the paper hardening and softening of the structural components in chilled cast iron under hot working have been studied. The deformation texture forming in eutectic cementite under hot rolling has been revealed, which is connected with the dynamic softening and depends on the degree and the nature of its alloying. The mechanism and regularities of the phase transformation effect in cementite on its behavior under plastic deformation and on the alloys ductility in general have been studied. In cementite chromium alloying initiates processes, that can be characterized as the pre-precipitation stage of the new phases, and this way it contributes to the cast iron ductility reduction and embrittles cementite. Carbide transformation, that occurs in eutectic cementite under alloying with vanadium, stimulates softening of the alloy and increases its ductility level. Moreover, the multiple glide planes {130},{011},{112} in cementite have been determined. It has been found out, that in supersaturated cementite vanadium carbides precipitation stimulates the extra glide plane {111} occurrence under hot rolling. The essence of the carbide transformation phenomenon is that under hot working there occurs the lubricating effect at the transition of the metastable iron carbide condition, which is strengthened with vanadium supersaturation and mechanical hardening, to a more stable condition due to precipitation of the proeutectoid constituents on the one hand, and because of the dynamic softening processes on the other hand. At that, the autocatalyticity effect is observed: there is precipitation of carbides with hardening and softening, similar to the processes that arise as a result of the superplastic effect induced by phase transformations.
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Gebril, Mohamed A., M. S. Aldlemey, and Farag I. Haider. "The Effect of Heat Treatment of Gray and Nodular Cast Iron with Ferrite Matrix on Mechanical Properties and Corrosion Rate Compared with Medium Carbon Steel." Advanced Materials Research 936 (June 2014): 1158–62. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1158.

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In this work, the influence of heat treatment process and quenching in different quenchant media of medium carbon steel, gray and nodular cast iron with ferrite matrix on the hardness, ductility and corrosion rate of has been investigated. During this type of operations, the specimens were Austenizing at 900°C for one hour. Therefore, the specimens were quenched in different kind of oil as quenched medium (oil 20-50, oil 40, oil 90, and water as reference). The hardness , impact energy to measure the ductility, corrosion rate and microstructures were studied. From result of steel 0.47% carbon was clear increasing in hardness and decreasing in ductility with close varying values in oil quenchant kind comparing with as received specimen and water quenched one, corrosion rate decreased with heat treatment and quenching process due to formation of single face instead of double phase before heat treatment process which created galvanic cell. For gray and nodular cast iron it is noticeable that no changing in microstructure within heating for one hour at 900°C because the matrix in both cast iron types is ferrite, therefore no changing in mechanical properties under heat treatment process with time of one hour which is not sufficient to decomposition of graphite, but with comparison the hardness of gray cast iron is more than nodular one due to distribution of graphite flacks which increase the hardness and decrease the ductility as well as increasesing the corrosion rate compared with nodular cast iron. Microstructure of both types of cast iron have been studied after subjected the specimens to heat treatment at 1000°C and for 10 hours, the microstructures shown clear diffusion of some carbon in ferrite matrix around the graphite phase and under quenched some of martensite formed.
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Matsunaga, Hisao, Teruki Usuda, Keiji Yanase, and Masahiro Endo. "Ductility Loss in Ductile Cast Iron with Internal Hydrogen." Metallurgical and Materials Transactions A 45, no. 3 (November 14, 2013): 1315–26. http://dx.doi.org/10.1007/s11661-013-2109-9.

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Lim, Bokkyu, and Young Woo Choi. "Effect of Semi Austempering Treatment on the Fatigue Properties of Ductile Cast Iron." Key Engineering Materials 345-346 (August 2007): 295–98. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.295.

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Single phase bainite structure which is obtained by the conventional austempering treatment reduces the ductility of ductile cast iron. Because of the reduction of ductility it is possible to worsen the fatigue properties. Therefore, semi austempered ductile iron which is treated from +ϒ is prepared to investigate the static strength and fatigue properties in comparison with fully austempered ductile iron (is treated from ϒ). In spite of semi austempered ductile iron shows the 86% increase of ductility. Also, semi austempered ductile iron shows the higher fatigue limit and lower fatigue crack growth rate as compared with fully austempered ductile iron. By the fractographical analysis, it is revealed that the ferrite obtained by semi austempering process brings about the plastic deformation(ductile striation) of crack tip and gives the prior path of crack propagation. The relatively low crack growth rate in semi austempered specimen is caused by above fractographical reasons
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Peng, Xian Ping. "Spheroidal Graphite Iron with High Ductility at Cast State and Produced by Cupola Melting." Applied Mechanics and Materials 66-68 (July 2011): 2117–21. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.2117.

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This paper described an industrial scale experience of melting as-cast high-ductility nodular iron. We discussed the rationale of selection of chemical compositions and the practice of speroidising and inoculation processes. The experimental results show that nodular iron castings with consistent quality at cast state can be produced using cupola melting technique. The castings of two heavy truck components–brake shoes and brake plates produced meet the technical requirements set in China standard GB/T1348-2009.
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Iwabuchi, Yoshitaka, and Isao Kobayashi. "Suppression of Elevated Temperature Brittleness in Spheroidal Graphite Cast Iron by Increasing Phosphorus Content." Key Engineering Materials 457 (December 2010): 428–32. http://dx.doi.org/10.4028/www.scientific.net/kem.457.428.

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Elevated temperature brittleness (ETB) of spheroidal graphite (s-g) cast iron has been referred to as reduced ductility within an elevated temperature range and has been related to grain boundary brittleness. The phenomenon of ETB has not been yet clearly understood. In this study, the factor affecting on ETB was studied in terms of strain rate and chemical composition. A study was carried out on the influence of phosphorus on ETB by using laboratory-made heats containing different phosphorus contents. ETB indicated the marked decrease in ductility at around 673K. S-g cast iron containing low phosphorus content manifested ETB at temperatures between 650K and 700K. There was a consistent correlation between the fractional increases in intergranular fracture appearance and the decrease in elongation. The increase of phosphorus suppressed ETB and s-g cast irons containing phosphorus exceeding 0.030 % were found to be immune to ETB. It was found that ETB could be suppressed by reducing the ratio of magnesium and phosphorus to less than 1.5.
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Pilc, Jozef, Michal Šajgalík, Jozef Holubják, Marianna Piešová, Lucia Zaušková, Ondrej Babík, Viktor Kuždák, and Jozef Rákoci. "Austempered Ductile Iron Machining." Technological Engineering 12, no. 1 (December 1, 2015): 9–12. http://dx.doi.org/10.1515/teen-2015-0002.

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Abstract This article deals with the machining of cast iron. In industrial practice, Austempered Ductile Iron began to be used relatively recently. ADI is ductile iron that has gone through austempering to get improved properties, among which we can include strength, wear resistance or noise damping. This specific material is defined also by other properties, such as high elasticity, ductility and endurance against tenigue, which are the properties, that considerably make the tooling characteristic worse.
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Guzik, E., M. Łagowski, A. Nowak-Dudek, and B. Niedzielski. "Examination and Elimination of Defects in Cone Casting Made of Ductile Cast Iron." Archives of Foundry Engineering 13, no. 4 (December 1, 2013): 43–48. http://dx.doi.org/10.2478/afe-2013-0079.

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Abstract In the scope of existing cooperation with the Foundry of Cast Iron ZM “WSK Rzeszów” Ltd. there was carried out research work of microstructure and mechanical properties in the walls of a cone casting made of ductile cast iron. The particular attention was being put to the search of the potential brittle phases which have deleterious effect on ductility and dynamic properties of highly strained use of the casting prone to the potential risk of cracks during the highly strained use.
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Morton, Allan J., Brigitte Décamps, Mark A. Gibson, and Alan Wolfenden. "Microstructural stability in rapidly solidified ternary iron aluminides." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 988–89. http://dx.doi.org/10.1017/s0424820100178070.

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Iron aluminides containing ternary additions of Cr, Si and other alloying elements offer good oxidation and sulphidation resistance at a relatively low cost but these alloys have only moderate strength at elevated temperatures and are of limited ductility. The generation of a distribution of fine dispersoids throughout the matrix of these alloys can provide increased strength and also improve ductility by reducing grain size.We report a study of the microstructural stability of rapidly solidified strip of iron aluminides containing chromium and minor additions of both titanium and boron. As cast strip thickness was in the range 80-120μm.Figure 1 shows the grain structure near the centre of the as cast strip of a 66.5Fe-28.5Al-5.0Cr (at.%) alloy. The grain size in this view of the strip is quite small (2-5μm) although optical metallography of the longitudinal and transverse cross sections show that the grain structure is columnar through much of the strip thickness.
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Dissertations / Theses on the topic "Cast-iron Ductility"

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COLOSIO, MARCO A. "Efeito da nitretação na tenacidade de ferros fundidos nodulares bainíticos e martensíticos." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11586.

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Dissertação (Mestrado)
IPEN/D
Universidade Mackenzie. Departamento de Engenharia de Materiais, São Paulo
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Book chapters on the topic "Cast-iron Ductility"

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Ram, Nanak, and Vijay Gautam. "Experimental Studies of Microstructure and Its Effect on Mechanical Properties of As-Cast Si-Mo-Cr Ductile Cast Iron." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220809.

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In the present work, three heats of Si-Mo-Cr ductile cast iron with varying amounts of major alloying elements are produced. The effect of the microstructural features on the microhardness, tensile strength and ductility is studied. Increasing the nodule count decreases the pearlite-ferrite ratio, which results in a decrease in tensile strength but an increase in percentage elongation. The spherical nodule plays a significant role in arresting the crack and reorients the crack path around the nodule, as evident from the results of scanning electron microscopy.
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Conference papers on the topic "Cast-iron Ductility"

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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.

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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.
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