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Transformation behaviour in thermomechanically processed C-Mn-Si TRIP steels with and without Nb

Version 2 2024-06-03, 11:00
Version 1 2017-07-21, 11:50
journal contribution
posted on 2024-06-03, 11:00 authored by EV Pereloma, IB Timokhina, Peter HodgsonPeter Hodgson
Two 0.2wt.% C-1.55wt.% Mn-1.5wt.% Si steels with and without the addition of 0.039 wt.% Nb were studied by laboratory simulations of controlled thermomechanical processing in a quench deformation dilatometer. The microstructures were characterised using optical metallography, image analysis and scanning electron microscopy techniques. The effects of recrystallised and non-recrystallised austenite and discontinuous paths on the final microstructure were studied. The results have shown that the highest volume fraction of retained austenite is associated with a 400°C isothermal bainite transformation temperature and the presence of approximately 50% polygonal ferrite and acicular ferrite as a dominant second phase.

History

Journal

Materials science and engineering: A

Volume

273-275

Pagination

448-452

Location

Amsterdam, The Netherlands

ISSN

0921-5093

eISSN

1873-4936

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1999, Elsevier

Publisher

Elsevier