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Microstructure and hardness evolution during simulated coiling of a direct strip cast low carbon low niobium steel

conference contribution
posted on 2015-01-01, 00:00 authored by Thomas DorinThomas Dorin, Peter HodgsonPeter Hodgson, N Stanford
This paper examines the impact of coiling temperature and duration on the phase transformation and precipitation behavior of a low carbon and low niobium direct strip cast steel. Coiling was performed at three carefully chosen temperatures: (1) in the ferrite (600°C), (2) during the austenite decomposition (700°C) and (3) in the austenite (850°C). The coiling conditions were found to strongly affect the final microstructure and hardness response, thus highlighting the necessity to judiciously design the coiling treatment. Optical microscopy, and scanning and transmission electron microscopy were used to characterize the microstructural constituents (polygonal ferrite, bainite and pearlite) and the NbC precipitates. Vickers macrohardness measurements are utilized to quantify the mechanical properties. The differences in hardening kinetics for the three different temperatures are shown to come from a complex combination of strengthening contributions.



Solid-Solid Phase Transformations in Inorganic Materials. International Conference (2015 : Whistler, B.C.)


47 - 54


[International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015]


Whistler, B.C.

Place of publication

Whistler, B.C.

Start date


End date






Publication classification

E Conference publication; E1 Full written paper - refereed

Copyright notice

2015, International Conference on Solid-Solid Phase Transformations in Inorganic Materials


M Militzer, G Botton, L Chen, J Howe, C Sinclair, H Zurob

Title of proceedings

PTM 2015 : Proceedings of the Solid-Solid Phase Transformations in Inorganic Materials 2015 International Conference