Fe, C 0.4 (wt%) steel, quenched, martensitic and quench cracks

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Description:	The steel has been rapidly quenched. This leads to a rapid volume change due to thermal expansion. In this case the steel has been unable to plastically deform to accommodate this change. This leads to the nucleation of cracks in the metal. This is exacerbated by the fact that the quenching of steel promotes the formation of the brittle phase martensite.
Keywords:	alloy • carbon • iron • martensite • metal • quenching • steel
Categories:	Science approaches > Microstructure Materials > Metals & alloys > Carbon steels Processes > Thermal treatments > Quenching Testing, analysis & experimentation > Metallography Scale > Micro
Created by:	DoITPoMS, University of Cambridge Dr R F Cochrane, Department of Materials, University of Leeds
Published by:	DoITPoMS, University of Cambridge
License:	This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales). You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). noncommercial – You may not use this work for commercial purposes. share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. View the full legal code here.
Date created:	04 September 2002
Date added:	21 August 2009
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Resource ID:	1329
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