Cast iron with magnesium induced spheroidised graphite

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Description:	Cast iron is a brittle material and it is advantageous to process it in such a way to improve its ductility. The brittleness is partially due to the graphite flakes which act as nucleation sites for cracks. Therefore it is an advantage to have the graphite present as spheres. This can be achieved by a heat treatment regime or by the addition of a small amount of Mg which poisons the graphite growth directions.
Keywords:	alloy • carbon • cast iron • iron • manganese • metal
Categories:	Science approaches > Microstructure Materials > Metals & alloys > Cast irons Materials > Metals & alloys > Magnesium & alloys Processes > Shaping > Casting Testing, analysis & experimentation > Metallography Scale > Micro
Created by:	Dr R F Cochrane, Department of Materials, University of Leeds DoITPoMS, University of Cambridge
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:	1432
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