@inproceedings{221f02c25ae5470c9edcb56c0189e026,
title = "Microstructure and mechanical properties of ultra-high strength steel plates with high deformability",
abstract = "High deformability has been considered as a critical factor of ultra-high strength steel plates subjected to compressive, tensile, and bending deformation induced by large ground movements. In this paper, various dual phase microstructures consisting of soft ferrite and strong low-temperature transformation phases without deformation in the (austenite + ferrite) two-phase temperature region after controlled rolling were introduced and then the mechanical properties were discussed with emphasis on deformability such as yield ratio and uniform elongation. Ultra-high strength steel plates fabricated by a modified thermo-mechanical control process showed lower yield ratio of under 0.75 and higher uniform elongation of 5\% as a minimum, as compared to commercial API X100 and X120 grade pipeline steels, without much sacrifice of Charpy impact properties because of an appropriate formation of soft ferrite and strong low-temperature transformation phases.",
keywords = "High deformability, Mechanical properties, Ultra-high strength steel plate",
author = "Byoungchul Hwang and Lee, \{Chang Gil\} and Sunghak Lee",
year = "2010",
doi = "10.4028/www.scientific.net/MSF.638-642.3266",
language = "English",
isbn = "0878492941",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "3266--3271",
editor = "Tara Chandra and Tara Chandra and Tara Chandra and N. Wanderka and N. Wanderka and N. Wanderka and Walter Reimers and Walter Reimers and Walter Reimers and M. Ionescu and M. Ionescu and M. Ionescu",
booktitle = "THERMEC 2009",
note = "6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 ; Conference date: 25-08-2009 Through 29-08-2009",
}