Microstructure and microtexture evolutions of deformed oxide layers on a hot-rolled microalloyed steel. (January 2015)

• Record Type: Journal Article
• Authors: Yu, Xianglong; Jiang, Zhengyi; Zhao, Jingwei; Wei, Dongbin; Zhou, Cunlong; Huang, Qingxue
• Is Part Of: Corrosion science. Volume 90(2015)
• Page Start: 140
• Page End: 152
• Publication Date: 2015-01
• Subjects: A. Low alloy steel -- B. SEM -- C. Oxidation -- C. Interfaces; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2014.10.005
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Microtexture development of deformed oxide layers is investigated. Magnetite shares the {0 0 1} fibre texture with wustite. Hematite develops the {0 0 0 1} basal fibre parallel to the oxide growth. Stress relief and ion vacancy diffusion mechanism for magnetite seam. Abstract: Electron backscatter diffraction (EBSD) analysis has been presented to investigate the microstructure and microtexture evolutions of deformed oxide scale formed on a microalloyed steel during hot rolling and accelerated cooling. Magnetite and wustite in oxide layers share a strong {0 0 1} and a weak {1 1 0} fibres texture parallel to the oxide growth. Trigonal hematite develops the {0 0 0 1} basal fibre parallel to the crystallographic plane {1 1 1} in magnetite. Taylor factor estimates have been conducted to elucidate the microtexture evolution. The fine-grained magnetite seam adjacent to the substrate is governed by stress relief and ions vacancy diffusion mechanism.