Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel

Presence of nanoscale bainitic ferrites and high carbon retained austenites that are stable at ambient temperature within the microstructures of super strong bainitic steels makes it possible to achieve exceptional strengths and ductility properties in these groups of nanostructured steels. This art...

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Main Author: B. Avishan
Format: Article
Language:fas
Published: Isfahan University of Technology 2017-02-01
Series:Journal of Advanced Materials in Engineering
Subjects:
Online Access:http://jame.iut.ac.ir/article-1-882-en.html
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author B. Avishan
author_facet B. Avishan
author_sort B. Avishan
collection DOAJ
description Presence of nanoscale bainitic ferrites and high carbon retained austenites that are stable at ambient temperature within the microstructures of super strong bainitic steels makes it possible to achieve exceptional strengths and ductility properties in these groups of nanostructured steels. This article aims to study the effect of the dislocation density variations during tensile testing in ambient temperature on deformation behavior of nanostructured low temperature bainitic steels. Results indicate that dislocation absorption from bainitic ferrite subunits by surrounding retained austenite reduces the work hardening and therefore increases the formability of bainitic ferrite during deformation, which in turn results in a suitable combination of strength and ductility.
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spelling doaj.art-4eaa426b9865413b9cf44cab2d1b6ada2022-12-21T20:00:27ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering2251-600X2423-57332017-02-01354101111Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic SteelB. Avishan0 Presence of nanoscale bainitic ferrites and high carbon retained austenites that are stable at ambient temperature within the microstructures of super strong bainitic steels makes it possible to achieve exceptional strengths and ductility properties in these groups of nanostructured steels. This article aims to study the effect of the dislocation density variations during tensile testing in ambient temperature on deformation behavior of nanostructured low temperature bainitic steels. Results indicate that dislocation absorption from bainitic ferrite subunits by surrounding retained austenite reduces the work hardening and therefore increases the formability of bainitic ferrite during deformation, which in turn results in a suitable combination of strength and ductility.http://jame.iut.ac.ir/article-1-882-en.htmlnanostructured bainitestrengthductilitydislocationwork hardening
spellingShingle B. Avishan
Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
Journal of Advanced Materials in Engineering
nanostructured bainite
strength
ductility
dislocation
work hardening
title Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
title_full Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
title_fullStr Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
title_full_unstemmed Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
title_short Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel
title_sort effect of dislocation density on deformation behavior of super strong bainitic steel
topic nanostructured bainite
strength
ductility
dislocation
work hardening
url http://jame.iut.ac.ir/article-1-882-en.html
work_keys_str_mv AT bavishan effectofdislocationdensityondeformationbehaviorofsuperstrongbainiticsteel