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Metals 2015, 5(2), 1000-1019; doi:10.3390/met5021000

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.
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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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Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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