DoITPoMS

Full Record for Micrograph 66

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Micrograph no
66
Brief description
Hypoeutectic white cast iron
Keywords
alloy Link to MATTER Glossary entry for alloy, austenite Link to MATTER Glossary entry for austenite, cast iron Link to MATTER Glossary entry for cast iron, cementite Link to MATTER Glossary entry for cementite, dendrite Link to MATTER Glossary entry for dendrite, ferrite Link to MATTER Glossary entry for ferrite, hypoeutectic Link to MATTER Glossary entry for hypoeutectic, iron, metal, pearlite Link to MATTER Glossary entry for pearlite
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 2-4, other constituents (wt% typical) (Cast iron)
Standard codes
Reaction
Processing
Applications
Sample preparation
Technique
Reflected light microscopy
Length bar
400 μm
Further information
With a carbon equivalent less than the eutectic composition a hypoeutectic white cast iron is formed. Primary austenite dendrites (dark) are first to form from the liquid. At the eutectic the remaining liquid transforms to a mixture of austenite and cementite (light) with further transformation of the austenite to ferrite and pearlite.
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
25/10/01
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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