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Characterization of nano-structured bainitic steel

Beladi, Hossein, Timokhina, Ilana B. and Hodgson, Peter D. 2012, Characterization of nano-structured bainitic steel, in UFGNSM 2012 : Proceedings of the 2nd International Conference on Ultrafine Grained and Nanostructured Materials, World Scientific, Singapore, Singapore, pp. 1-8.

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Title Characterization of nano-structured bainitic steel
Author(s) Beladi, Hossein
Timokhina, Ilana B.
Hodgson, Peter D.
Conference name Ultrafine Grained and Nanostructured Materials. Conference (2nd : 2012 : Tehran, Iran)
Conference location Tehran, Iran
Conference dates 14-15 Nov. 2009
Title of proceedings UFGNSM 2012 : Proceedings of the 2nd International Conference on Ultrafine Grained and Nanostructured Materials
Editor(s) [Unknown]
Publication date 2012
Conference series Ultrafine Grained and Nanostructured Materials. Conference
Start page 1
End page 8
Total pages 8
Publisher World Scientific
Place of publication Singapore, Singapore
Keyword(s) nanobainitic steel
crystallography analysis
Summary A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 200°C for 10 days to produce a nano-structured bainitic steel. The microstructure consisted of nanobainitic ferrite laths with a high dislocation density and retained austenite films having extensive twins. The crystallographic analysis using TEM and EBSD revealed that the bainitic ferrite laths are close to the Nishiyama-Wassermann orientation relationship with their parent austenite. There was only one type of packet identified in a given transformed austenite grain. Each packet consisted of two different blocks having variants with the same habit plane, but different crystallographic orientations. Atom Probe Tomography (APT) revealed that the carbon content of nanobainitic ferrite laths was much higher than expected from the para-equilibrium level. This was explained due to the long heat treatment time, which led to the formation of fine Fe-C clusters on areas with high dislocation densities in bainitic ferrite laths.
Notes This paper was published in the International Journal of Modern Physics : Conference Series v.5/1, 2012
ISSN 2010-1945
Language eng
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861103 Basic Iron and Steel Products
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2012, World Scientific Publishing Company
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049269

Document type: Conference Paper
Collection: Institute for Frontier Materials
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