Volume 35, Issue 4 (Journal of Advanced Materials-Winter 2017)                   jame 2017, 35(4): 101-111 | Back to browse issues page

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Avishan B. Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel. jame 2017; 35 (4) :101-111
URL: http://jame.iut.ac.ir/article-1-882-en.html
, avishan@azaruniv.ac.ir
Abstract:   (9621 Views)

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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Type of Study: Research | Subject: Welding and joining
Received: 2017/02/21 | Accepted: 2017/02/21 | Published: 2017/02/21

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