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Micrograph 779 and full record

Link to image file for micrograph 779
Micrograph no
779
Brief description
Spheroidal graphite cast iron
Keywords
alloy Link to MATTER Glossary entry for alloy, carbon, cast iron Link to MATTER Glossary entry for cast iron, decarburisation Link to MATTER Glossary entry for decarburisation, ferrite Link to MATTER Glossary entry for ferrite, graphite Link to MATTER Glossary entry for graphite, grey cast iron Link to MATTER Glossary entry for grey cast iron, iron, magnesium, metal, pearlite Link to MATTER Glossary entry for pearlite, silicon Link to MATTER Glossary entry for silicon
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 3.2, Si 2.5, Mg 0.05 (wt%)
Standard codes
Reaction
Processing
Applications
Sample preparation
Etchant: Nital 2%
Technique
Reflected light microscopy
Length bar
50 μm
Further information
Spheroidal graphite cast iron, Fe-3.2C-2.5Si-0.05Mg wt%, containing graphite nodules in a matrix which is pearlitic. One of the nodules is surrounded by ferrite, simply because the region around the nodule is decarburised as carbon deposits on to the graphite.

Source: http://www.msm.cam.ac.uk/phase-trans/2001/adi/cast.iron.html.
Contributor
Dr M A Yescas-Gonzalez
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
18/07/03
Licence for re-use
DoITPoMS standard terms of use
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