Fe, C 0.9 (wt%), martensite

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Description:	Martensite is a metastable supersaturated solid solution of C in steel. The excess carbon atoms sufficiently strain the matrix to produce a b.c.t (body centred tetragonal) structure. In order to minimise interfacial strain between the parent austenite and the transforming martensite the martensites assume a lath or needle shape.
Keywords:	alloy • carbon • iron • martensite • metal • metastable • steel
Categories:	Science approaches > Microstructure Science approaches > Phase transformations Materials > Metals & alloys > Carbon steels Testing, analysis & experimentation > Metallography Scale > Micro
Created by:	DoITPoMS, University of Cambridge Prof T W Clyne, Department of Materials Science and Metallurgy, University of Cambridge
Published by:	DoITPoMS, University of Cambridge
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Date created:	25 October 2001
Date added:	21 August 2009
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Resource ID:	1091
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