Effect of Selected Alloying Elements on Mechanical Properties of Pearlitic Nodular Cast Irons

Serrallach, J. A.; Lacaze, Jacques; Sertucha, Jon; Súarez, Ramón; Monzón, A.

doi:10.4028/www.scientific.net/kem.457.361

Cited by 20 publications

(21 citation statements)

References 10 publications

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“…It was first attempted to find a relation between the composition and the pearlite fraction at given casting conditions as reported by other authors, 3 here including also the nodule count. As the present study complements a previous similar work on pearlitic grades, 18 a first trial was carried out with the results from both studies. This attempt was unsuccessful, with residuals by far too high for the correlation obtained to be satisfactory, i.e.…”

Section: Statistical Analysis Of Propertiessupporting

confidence: 67%

“…The composite hardness was estimated here using the above expression for ferrite hardness for all alloys, setting the pearlite term to zero and the one for pearlite previously evaluated 18 with the ferrite term set similarly to zero. The correlation between CMMH and measured HB values is shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Emphasis was put on the properties of ferrite, while those of pearlite have been previously investigated. 18 During the present investigation, the amount of silicon has been varied from 4?16 wt-% to an unusual low value of 1?51 wt-%.…”

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confidence: 99%

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Effect of alloying on mechanical properties of as cast ferritic nodular cast irons

Sertucha¹,

Lacaze²,

Serrallach³

et al. 2012

Materials Science and Technology

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. Effect of alloying on mechanical properties of as cast ferritic nodular cast irons. Materials Science and Technology, Maney Publishing, 2012, vol. 28, pp. 184-191. 10 The development of low temperature applications for ferritic nodular cast irons calls for improved materials in the as cast state, e.g. for off-shore windmills components. Within this line of work, a series of 68 castings were prepared with the same casting procedure and slight changes in composition. The tensile properties at room temperature, as well as the impact energy for rupture at room temperature, 220uC and 240uC, were measured. Outputs from multivariate analysis performed on the data are then discussed and compared to literature results, putting emphasis on the properties of the ferritic matrix.

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Section: Statistical Analysis Of Propertiessupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

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Effect of alloying on mechanical properties of as cast ferritic nodular cast irons

Sertucha¹,

Lacaze²,

Serrallach³

et al. 2012

Materials Science and Technology

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“…For each cast alloy, a 10 mm testing tensile bar with threaded ends was machined from one of the keel-blocks cooled in the mould and from the air cooled keel-block for room temperature tensile testing as detailed elsewhere [8]. The fracture surface was then prepared for metallographic inspection.…”

Section: Methodsmentioning

confidence: 99%

Combined Effects of Copper and Tin at Intermediate Level of Manganese on the Structure and Properties of As-Cast Nodular Graphite Cast Iron

Lacaze¹,

Sertucha²,

Larrañaga³

et al. 2017

Archives of Metallurgy and Materials

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Copper, manganese and tin are commonly used as pearlite promoter elements in cast irons. A number of studies have been aimed at quantitatively evaluate the effect of each of these elements, individually or at given levels of the others. As a matter of fact, while tin may be necessary for achieving a fully pearlitic matrix, it is known that when in excess it is detrimental for mechanical properties. As the pearlite promoting effect of each of those elements is totally different, it is of real interest to know the optimum combination of them for a given cooling rate. The present report is a first part of a work dedicated at characterizing the best alloying levels in terms of room temperature mechanical properties of as-cast pearlitic materials.Keywords: pearlitic nodular cast irons, copper, manganese, tin, room temperature mechanical properties IntrodutionCast irons are mostly used in as-cast state to avoid costly heat-treatments that would also impair some of their mechanical properties such as fatigue resistance. In several cases, the desired matrix may be either fully ferritic or fully pearlitic. The aim of this work was to find if an optimal combination of manganese, copper and tin could be defined as regards room temperature (RT) mechanical properties of nodular graphite iron (SGI) when a fully pearlitic matrix is looked for in the as-cast state. It appeared of interest to first perform a literature review of available information on the effect of these pearlite promoter elements on microstructure. A series of castings have then been achieved for selected compositions. Microstructure and mechanical properties of these castings are presented and compared to literature data. Literature reviewObtaining fully pearlitic matrix in as-cast complex components made of SGI needs resorting to alloying additions. Amongst other elements, the effect of manganese, copper and tin as pearlite promoters is well known though there are very few works available for really quantifying it. Furthermore, the published reports deal with at most interaction between two of these elements, tin and copper in the work by Levin et al. In all these works, the alloys contained 3.60-3.75 wt.% carbon and more or less 2.4 wt.% silicon. However, the casting conditions in these various works differed and as the cooling rate has a definite effect on the pearlite and ferrite amounts the results from these studies could be only partly compared.

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“…Dentro del sector de automoción, parte de los esfuerzos de investigación actuales se orientan hacia la obtención de fundiciones grafíticas con propiedades optimizadas [1][2][3] . El objetivo de estos "nuevos materiales de fundición" se centra en ofrecer una alternativa más económica a la utilización de los aceros u otras aleaciones especiales para la fabricación de piezas de altas exigencias [1] . En el campo de las fundiciones de hierro con grafito precipitado, la fundición esferoidal constituye uno de los materiales con más recorrido desde su descubrimiento en la década de los 50.…”

Section: Introductionunclassified

Fabricación de piezas de fundición con grafito esferoidal en molde metálico

Urrestarazu¹,

Sertucha²,

Súarez³

et al. 2013

REVMETAL

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Fundición esferoidal; Molde metálico; Características estructurales; Propiedades mecánicas. Ductile iron castings fabricated using metallic moulds AbstractThe features and suitability of high requirements ductile iron castings production using metallic moulds have been studied in the present work. The structural and mechanical properties of the produced castings have been analysed and compared to the corresponding ones but fabricated using green sand moulds according to a conventional production process. The higher cooling rate in the metallic moulds is the main cause for the appearance of the detected structural changes in castings. The mechanical and microstructural properties obtained directly on castings are remarkable due to the higher nodule count among other factors. Finally, the benefits and inconveniences found in this kind of production methodology using metallic moulds are also discussed.

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Effect of Selected Alloying Elements on Mechanical Properties of Pearlitic Nodular Cast Irons

Cited by 20 publications

References 10 publications

Effect of alloying on mechanical properties of as cast ferritic nodular cast irons

Effect of alloying on mechanical properties of as cast ferritic nodular cast irons

Combined Effects of Copper and Tin at Intermediate Level of Manganese on the Structure and Properties of As-Cast Nodular Graphite Cast Iron

Fabricación de piezas de fundición con grafito esferoidal en molde metálico

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