Image icon  Fe, C 0.6 (wt%) steel, hard drawn

 
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Description: Hard drawing is an operation done to a metal in order to increase its strength. The operation causes dislocation motion in the metal and sufficient work causes the creation of extra dislocations through the operation Frank-Read sources. These dislocations "lock" together, making yield of the material more difficult, hence increasing its strength. This process also causes the metal to be more brittle. The act of drawing causes deformation of the grains in the direction of drawing as seen in this sample.
Keywords: alloy • carbon • drawing • iron • metal • steel
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Carbon steels
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).
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Date created: 04 September 2002
Date added: 21 August 2009
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Resource ID: 1306