Dissemination of IT for the Promotion of Materials Science (DoITPoMS)

DoITPoMS Micrograph Library Full Record for Micrograph 133
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Full Record for Micrograph 133

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Micrograph no
133
Brief description
Steel, austenitised at 1200 centigrade for 120 s and then transformed isothermally at 350 centigrade for 2000 s before cooling to room temperature.
Keywords
alloy Link to MATTER Glossary entry for alloy, bainite Link to MATTER Glossary entry for bainite, metal, shape deformation, steel Link to MATTER Glossary entry for steel
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 0.24, Si 2.18, Mn 2.32, Ni 1.05 (wt%)
Standard codes
Reaction
Processing
The sample was metallographically polished flat prior to transformation. For details see E. Swallow & H. Bhadeshia, Materials Science and Technology 12 (1996) 121
Applications
Sample preparation
Polished flat prior to transformation. All visible relief is due to phase change - the sample is unetched.
Technique
Atomic force microscopy (AFM)
Length bar
1 μm
Further information
Steel, austenitised at 1200 centigrade for 120 s and then transformed isothermally at 350 centigrade for 2000 s before cooling to room temperature. The specimen was polished prior to transformation. This atomic force microscope image shows the displacements caused by the formation of bainite.
Contributor
Prof H K D H Bhadeshia
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
09/01/02
Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International