Image icon  Dual-phase steel water quenched from 775°C

 
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Description: Same steel when quenched from 775°C. Carbides cannot be seen anymore. The microstructure is essentially martensite and ferrite. Some retained austenite can be seen as white small particles which are brighter than the background ferrite. Retained austenite measured using XRD was 3%. The step-etching technique has resulted in straw-coloured martensite, white austenite and the off-white ferrite at the background.
Keywords: alloy • dual-phase steel • metal
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Carbon steels
Processes > Thermal treatments > Quenching
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: Dr Amar K De, ASPPRC, Metallurgical and Materials Engineering Department, Colorado School of Mines
DoITPoMS, University of Cambridge
Published by: DoITPoMS, University of Cambridge
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Date created: 22 April 2003
Date added: 21 August 2009
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Resource ID: 1765