Solution Strengthened Ferritic Ductile Cast Iron Properties, Production and Application

Stets, Wolfram; Löblich, Herbert; Gassner, Gert; Schumacher, Peter

doi:10.1007/bf03355580

Cited by 39 publications

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“…Figure 1a and b shows the evolution of UTS, Y and HB as a function of silicon and carbon equivalent Ceq (calculated as %Cz0?28%Si, wt-%) contents for all alloys prepared in this work. As expected from literature, 8,9,13 it is observed an increase of UTS, Y and HB parameters when increasing the silicon content in the alloy (Fig. 1a).…”

Section: Resultssupporting

confidence: 89%

As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties

Torre

Loizaga

Lacaze

et al. 2014

Materials Science and Technology

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To cite this version:Urko de La Torre, Aitor Loizaga, Jacques Lacaze, Jon Sertucha. As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties. Materials Science and Technology, Maney Publishing, 2014, vol. 30 (n°12) The present work shows a comparative study regarding the mechanical properties of 25 as cast ferritic ductile iron alloys, nine of them with silicon contents higher than 3?00% and carbon contents lower than 3?60%. In a first step, different carbon equivalent values have been used in order to analyse the effect of this parameter on the mechanical properties. After this comparative analysis, the composition ranges C53?30-3?40 wt-% and Si53?75-3?80 wt-% have been selected as the most proper ones to optimise the tensile and impact properties among the high silicon ductile iron alloys. Finally, a second study was carried out to compare the tensile and fatigue properties of the optimised high silicon alloy with the corresponding ones obtained from an EN GJS 400-18-LT grade alloy with low silicon content. Although the room temperature impact values obtained from the high silicon ductile iron are lower than 6 J cm 22 , the measured fatigue limit of this alloy (358 MPa) is clearly higher than the one obtained from the low silicon cast iron (170 MPa). A discussion about the benefits and advantages of the high silicon alloy is included.

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Section: Resultssupporting

confidence: 89%

As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties

Torre

Loizaga

Lacaze

et al. 2014

Materials Science and Technology

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“…If these additions are limited as in the present study, data in Fig. 3 shows that the alloys at high silicon content fulfil the new standard EN 1563 (Stets et al, 2013). Figure 4 compares the measured impact energy of fully ferritic alloys to that predicted with the regression analysis previously reported (Sertucha , 2012).…”

Section: Discussionsupporting

confidence: 53%

Statistical study to determine the effect of carbon, silicon, nickel and other alloying elements on the mechanical properties of as-cast ferritic ductile irons

Lacaze¹,

Sertucha²,

Larrañaga³

et al. 2016

REVMETAL

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ABSTRACT:There is a great interest in fully ferritic ductile irons due to their structural homogeneity, remarkable ductility and good response when machining. On the other hand the wide variety of raw materials available in foundry plants becomes a problem when controlling the chemical composition of the manufactured alloys. The present work shows a statistical study about the effect of different C, Si, Ni contents and other minor elements on structural and mechanical properties of a group of ferritic ductile iron alloys. A set of equations are finally presented to predict room temperature mechanical properties of ferritic ductile irons by means of their chemical composition and pearlite content. KEYWORDS:As-cast ferritic ductile cast irons; Carbon; Mechanical properties; Nickel; Silicon Citation / Cómo citar este artículo: Lacaze, J., Sertucha, J., Larrañaga, P., Suárez, R. (2016) "Statistical study to determine the effect of carbon, silicon, nickel and other alloying elements on the mechanical properties of as-cast ferritic ductile irons". Rev. Metal. 52 (2):e070. doi: http://dx.doi.org/10.3989/revmetalm.070. RESUMEN: Influencia del carbono, silicio, níquel y otros elementos de aleación sobre las propiedades mecáni-cas de la fundición con grafito esferoidal en bruto de colada.Las fundiciones con grafito esferoidal de matriz totalmente ferrítica tienen gran interés debido a su homogeneidad estructural, alargamiento destacable y su buena respuesta frente a las operaciones de mecanizado. Por otro lado, la extensa variedad de materias primas disponibles en las plantas de fundición supone un problema a la hora de controlar de forma efectiva la composición química de las aleaciones preparadas. En este trabajo se ha realizado un estudio estadístico sobre la influencia de los diferentes contenidos de carbono, silicio, níquel y de otros elementos minoritarios sobre las características estructurales y las propiedades mecánicas de un grupo de fundiciones con grafito esferoidal y matriz ferrítica. Finalmente, se han obtenido un número de ecuaciones que permiten predecir las propiedades mecánicas a temperatura ambiente de estas fundiciones en función de su composición química y su contenido de perlita en la matriz metálica.

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“…[1] It has been found that, starting from 2.4 wt% Si, the tensile strength increases until 4.3 wt% Si is reached. SSF-DI exhibit also very small hardness variation due to their single-phase metal matrix.…”

Section: Introductionmentioning

confidence: 99%

“…[1,3,[11][12][13][14][15] It has been found that fatigue resistance of SSF grade is higher than that of tradition ferritic/pearlitic ductile iron at the same tensile strength. [1,3,[11][12][13][14][15] It has been found that fatigue resistance of SSF grade is higher than that of tradition ferritic/pearlitic ductile iron at the same tensile strength.…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, [1,11,15] it is reported that the increased silicon content increases the tendency for chunky graphite in the thermal center of the castings with detrimental effect on mechanical properties. Elements that promote chunky graphite formation are Ce, Ca, Ni, Si, Al, rare earths, while elements that counteract it include As, Bi, B, Sb, Sn, and Pb.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Fatigue Properties of Heavy Section Solution Strengthened Ferritic Ductile Iron Castings

et al. 2016

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Recently, standardized solution strengthened ferritic ductile irons have met the interest of the industrial world since their improved mechanical properties and workability compared to standard ferritic-pearlitic ductile irons. For this reason, mechanical and fatigue properties of heavy section solution strengthened ferritic ductile irons castings are examined. Mechanical tests are carried out on specimens taken from the center of castings with long solidification times. Metallographic analyses are performed by using optical microscopy. Fracture surfaces of fatigue specimens are investigated in order to evaluate crack initiation and propagation zones. Finally, fatigue curves of the analyzed alloy are compared with those obtained from pearlitic ductile iron with the same casting geometry.

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Solution Strengthened Ferritic Ductile Cast Iron Properties, Production and Application

Cited by 39 publications

References 0 publications

As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties

As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties

Statistical study to determine the effect of carbon, silicon, nickel and other alloying elements on the mechanical properties of as-cast ferritic ductile irons

Mechanical and Fatigue Properties of Heavy Section Solution Strengthened Ferritic Ductile Iron Castings

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