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Metals 2015, 5(2), 1000-1019;

On Thermal Expansion and Density of CGI and SGI Cast Irons

Department of Materials and Manufacturing, School of Engineering, Jönköping University, P.O. Box 1026, Jönköping SE-551 11, Sweden
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 30 April 2015 / Revised: 18 May 2015 / Accepted: 26 May 2015 / Published: 4 June 2015
(This article belongs to the Special Issue Casting Alloy Design and Modification)
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The thermal expansion and density of Compacted Graphite Iron (CGI) and Spheroidal Graphite Iron (SGI) were measured in the temperature range of 25–500 °C using push-rod type dilatometer. The coefficient of the thermal expansion (CTE) of cast iron can be expressed by the following equation: CTE = 1.38 × 10−5 + 5.38 × 10−8 N − 5.85 × 10−7 G + 1.85 × 10−8 T − 2.41 × 10−6 RP/F − 1.28 × 10−8 NG − 2.97 × 10−7 GRP/F + 4.65 × 10−9 TRP/F + 1.08 × 10−7 G2 − 4.80 × 10−11 T2 (N: Nodularity, G: Area fraction of graphite (%), T: Temperature (°C), RP/F: Pearlite/Ferrite ratio in the matrix). View Full-Text
Keywords: thermal expansion; high-silicon cast iron; dilatometer; density; cycle test thermal expansion; high-silicon cast iron; dilatometer; density; cycle test

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Matsushita, T.; Ghassemali, E.; Saro, A.G.; Elmquist, L.; Jarfors, A.E.W. On Thermal Expansion and Density of CGI and SGI Cast Irons. Metals 2015, 5, 1000-1019.

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