Nano-scale analysis of nano-bainite formed in advanced high strength steels

Authors

Ilana B. Timokhina, Deakin UniversityFollow
Hossein Beladi, Deakin University
X Y Xiong, Monash University, Australia
Elena Pereloma, University of WollongongFollow
Peter D. Hodgson, Deakin University

RIS ID

33805

Publication Details

Timokhina, I. B., Beladi, H., Xiong, X. Y., Pereloma, E. V. and Hodgson, P. D. (2010). Nano-scale analysis of nano-bainite formed in advanced high strength steels. A. Morton and J. Nie In Seventh Pacific Rim International Conference on Advanced Materials and Processing, 2-6 August,2010, Cairns, Australia. Materials Science Forum, 654-656 102-105.

Abstract

The effect of composition and processing schedule on the microstructure of C-Mn-Si- Mo-(Al)-(Nb) steels containing nano-bainite was studied using transmission electron microscopy (TEM) and atom probe tomography (APT). The major phase formed in all steels was nano-bainite. However, the steels with lower carbon and alloying addition content subjected to TMP had better mechanical properties than high alloyed steel after isothermal treatment. The presence of ferrite in the microstructure can improve not only ductility but lead to the formation of retained austenite with optimum chemical stability.