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New vanadium-microalloyed bainitic 700 MPa strip steel product

New vanadium-microalloyed bainitic 700 MPa strip steel product

Authors :
R. Lagneborg
M. Gladh
J. Hagström
J. Komenda
T. Siwecki
B. Hutchinson
J.-E. Hedin
Source :
Ironmaking & Steelmaking. 41:1-6
Publication Year :
2013
Publisher :
Informa UK Limited, 2013.

Abstract

Hot rolled strips having a minimum yield stress of 700 MPa have been produced in full scale processing. Alloy additions (1·5%Mn, 1%Cr and 0·3%Mo) together with rapid cooling on the run-out table produce fully bainitic microstructures which confer strength and toughness. Microalloying with 0·08%V has been shown to be essential for achieving stable strength levels that are independent of the coiling temperature since the necessary low coiling temperatures are difficult to reproduce accurately under steelworks conditions. The products have excellent bendability and HAZ toughness. Typical microstructures and textures of the hot rolled strips are also presented.

Details

ISSN :
17432812 and 03019233
Volume :
41
Database :
OpenAIRE
Journal :
Ironmaking & Steelmaking
Accession number :
edsair.doi...........7f1585e3980f49cb60dd5021e9939898
Full Text :
https://doi.org/10.1179/1743281213y.0000000118