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Micrograph 329 and full record

Link to image file for micrograph 329
Micrograph no
329
Brief description
Nickel low carbon steel, quenched and tempered
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, tempered
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 0.31, Ni 3.0, Cr 0.9, Mn 0.6 (wt%)
Standard codes
BS 653M31, formerly En 23
Reaction
Processing
Quench & temper 700 ºC, 50 hrs
Applications
Sample preparation
Nital
Technique
Reflected light microscopy
Length bar
100 μm
Further information
Medium carbon steel containing a high proportion of nickel in order to stabilise the austenite to lower temperature. The steel has been quenched in order to produce martensite. Subsequently the steel has been tempered in order to allow the interstitially trapped carbon to diffuse out and consequently a reduction in hardness is observed.
Contributor
Dr R F Cochrane
Organisation
Department of Materials, University of Leeds
Date
04/09/02
Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International
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