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

DoITPoMS Micrograph Library Micrograph 737 and full record

Micrograph 737 and full record

Link to image file for micrograph 737
Micrograph no
737
Brief description
Dual-phase steel water quenched from 800°C
Keywords
alloy Link to MATTER Glossary entry for alloy, dual-phase steel, metal
Categories
Metal or alloy
System
Fe-C-X   Link to phase diagram
Composition
Fe, C 0.15, Mn 1.5, Si 1.5 (wt%)
Standard codes
Reaction
Processing
Annealed at 800°C for 5 mins and then water quenched to room temperature.
Applications
Sample preparation
Sample mounted in bakelite and observed along the sample rolling direction. Etched first with 4% Picral and then with 10% aqueous sodium metabisulfite solution.
Technique
Reflected light microscopy
Length bar
6 μm
Further information
The steel sample with composition same as above was quenched from 800°C. The microstructure shows higher volume fraction of martensite. The martensite is appearing as the same straw-coloured entities. The straw tint is not influenced either by martensite size or its C-content. The retained austenite is appearing as bright white fine particles associated mostly with martensite.
Contributor
Dr Amar K De
Organisation
ASPPRC, Metallurgical and Materials Engineering Department, Colorado School of Mines
Date
22/04/03
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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