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Development of ultrafine grained steels through thermomechanical processing

journal contribution
posted on 2005-01-01, 00:00 authored by Peter HodgsonPeter Hodgson, Hossein BeladiHossein Beladi, Georgina Kelly
The formation of ultrafine ferrite by strain induced transformation is assessed using rolling and hot torsion experiments. These experiments are used to examine the impact of thermomechanical processing conditions and steel chemistry on strain induced austenite to ferrite transformation and the formation of ultrafine ferrite. The critical strain for dynamic strain induced transformation increased with increasing carbon equivalence, deformation temperature and austenite grain size. The deformation structure in the austenite grains changes with the thermomechanical processing conditions. Drawing on these results and the current literature, the important factors for the production of ultrafine ferrite are described and a mechanism is proposed.

History

Journal

Canadian metallurgical quarterly

Volume

44

Issue

2

Pagination

179 - 185

Publisher

Canadian Institute of Mining, Metallurgy and Petroleum

Location

Montreal, Canada

ISSN

0008-4433

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2005, Canadian Institute of Mining, Metallury and Petroleum

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