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Full Record for Micrograph 337

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Micrograph no
337
Brief description
Fe, C 1.35 (wt%) steel, quenched
Keywords
alloy Link to MATTER Glossary entry for alloy, carbon, iron, martensite Link to MATTER Glossary entry for martensite, metal, quenching Link to MATTER Glossary entry for quenching, steel Link to MATTER Glossary entry for steel
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 1.35 (wt%)
Standard codes
Reaction
Processing
Austenitised at 1000 ºC, quenched into water, then into liquid nitrogen. 24 hrs @ 700 ºC
Applications
Sample preparation
Nital
Technique
Reflected light microscopy
Length bar
200 μm
Further information
A high carbon steel that has been quenched producing martensite laths in the microstructure. High carbon steels are more prone to the formation of martensite since more excess carbon is available to be trapped interstitially. Subsequently tempered to diffuse some of the carbon out, resulting in a reduced hardness.
Contributor
Dr R F Cochrane
Organisation
Department of Materials, University of Leeds
Date
04/09/02
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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