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Three-dimensional microstructural characterization of cast iron alloys for numerical analyses
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0003-0899-8939
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-0101-0062
2018 (English)In: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 925, p. 427-435Article in journal (Refereed) Published
Abstract [en]

In this paper, we aim at characterizing three different cast iron alloys and their microstructural features, namely lamellar, compacted and nodular graphite iron. The characterization of microscopic features is essential for the development of methods to optimize the behavior of cast iron alloys; e.g. maximize thermal dissipation and/or maximize ductility while maintaining strength. The variation of these properties is commonly analyzed by metallography on two-dimensional representations of the alloy. However, more precise estimates of the morphologies and material characteristics are obtained by three-dimensional reconstruction of microstructures. The use of X-ray microtomography provides an excellent tool to generate high resolution threedimensional microstructure images. The characteristics of the graphite constituent in the microstructure, including the size, shape and connectivity, were analyzed for the different cast iron alloys. It was observed that the lamellar and compacted graphite iron alloys have relatively large connected graphite morphologies, as opposed to ductile iron where the graphite is present as nodules. The results of the characterization for the different alloys were ultimately used to generate finite element models.

Place, publisher, year, edition, pages
Trans Tech Publications, 2018. Vol. 925, p. 427-435
Keywords [en]
Cast iron, Characterization, Microstructure, Tomography, X-ray, Ductility, Graphite, Microstructural evolution, Nodular iron, X rays, Compacted graphite iron, Material characteristics, Micro-structural characterization, Microscopic features, Microstructural features, Three-dimensional microstructures, Three-dimensional reconstruction, X ray microtomography
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-41278DOI: 10.4028/www.scientific.net/MSF.925.427ISI: XYZScopus ID: 2-s2.0-85050017657ISBN: 9783035710557 (print)OAI: oai:DiVA.org:hj-41278DiVA, id: diva2:1242561
Conference
11th International Symposium on the Science and Processing of Cast Iron, SPCI-XI 2017, Jönköping, Sweden, 4-7 September 2017
Funder
Knowledge FoundationAvailable from: 2018-08-28 Created: 2018-08-28 Last updated: 2019-02-15Bibliographically approved

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Salomonsson, KentJarfors, Anders E.W.

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