Microstructure and mechanical properties of as-cast ferritic spheroidal cast iron for heavy section
DOI:
https://doi.org/10.3989/revmetalm.2006.v42.i1.3Keywords:
Ferritic spheroidal cast iron, As-cast, Heavy section, Cooling rate, Mechanical propertiesAbstract
In order to carry out a study of the effect of the cooling rate, the composition and the microstructure upon the mechanical properties of a cast iron with nodular graphite and ferrite matrix for heavy sections, one cube with an edge of 300 mm was manufactured through casting in sand molds. This cube contains, as it is habitual, silicon and magnesium which proceed from the inoculant (ferrosilicon) and from the nodulizant (Fe-Si-Mg). The effects of the size, shape and distribution of the graphite nodules and of the microstructure of the matrix upon the mechanical resistance, impact behaviour and fracture toughness of this cast iron are investigated in two zones of the cube which have been casted with a different cooling rate: the thermal centre and the surface. The chemical compositions and the techniques used to perform the mechanical tests and the metallographic analysis are suplied.
Downloads
References
[1] Norma UNE-EN 1563, Fundición. Fundición de grafito esferoidal, AENOR 1998, pp. 11-12.
[2] R. Ruxanda, D.M. Stefanescu Y T.S. Piwonka, AFS Trans. 110 (2002) 1.131-1.147.
[3] R.J. Seher, H.M. Jamers Y G.N. Maniar, ASTM STP 504 (1972) 119-137.
[4] W. L. Bradley Y M. N. Srinivasan, Int. Mater. Rev. 35 (1990) 129-165.
[5] Norma UNE-EN ISO 945, Fundición. Designación de la microestructura del grafito, AENOR 1996, p. 7.
[6] T.L. Capelleti Y J.R. Hornaday, Trans. AFS 82 (1974) 59-64.
[7] Foundrymen’s Guide to Ductile Iron Microstructures, American Foundrymen’s Society Inc., Des Plaines, Illinois, 1984, p. 36.
[8] Spec. E 112-95, Standard Test Methods for Determining Average Grain Size, 1996, Philadelfia, American Society for Testing and Materials, pp. 229-232.
[9] J.F. Knott, Fundamentals of Fracture Mechanics, Ed. Butterworths 1973, pp. 9-10.
[10] Norma UNE-EN 1563, Fundición. Fundición de grafito esferoidal, AENOR 1998, p. 25.
[11] M. Janssen, J.Zuidema Y R.J.H. Wanhill, Fracture Mechanics, Ed.VSSD, 2nd edition, 2002, Delft, The Netherlands, p. 109.
[12] N.E. Dowling, Mechanical behavior of materials: engineering methods for deformation, fracture and fatigue, Ed. Prentice Hall, 2nd edition, 1999, pp. 332-345.
[14] Ductile Iron Handbook, American Foundrymen’s Society Inc., Des Plaines, Illinois, 1999, pp. 207-208.
[15] M. Cagné Y D. Argo, Heavy Section Ductile Iron-Part II: Formation of Chunk Graphite, ASM Adv. Casting Technol. Int. Conf., Kalamazoo, Michigan, EEUU, 1986, pp. 245-256.
[16] Ductile Iron Handbook, American Foundrymen’s Society Inc., Des Plaines, Illinois, 1999, p. 227.
[17] Ductile Iron Handbook, American Foundrymen’s Society Inc., Des Plaines, Illinois, 1999, p. 77.
[18] G. Sandoz, H. Bishop Y W. Pellini, Trans. ASM 46 (1954) 418.
[19] J. M. Motz, Giesserei 67 (1980) 628.
[20] L. Mogford, I. L. Brown Y D. Hull, JISI, (1967) 729-732.
[21] S. Komatsu, T. Shiota, T. Matsuota Y K. Nakamura, AFS Trans. 102 (1994) 121-125.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2006 Consejo Superior de Investigaciones Científicas (CSIC)
This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read here the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.
