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Title: Serrated flow behavior of hot-rolled Fe-6.5wt.%Si sheet with layered structure
Authors: Shi, X
Liang, Y
Liu, B
Ding, Z 
Zhang, B
Ye, F
Issue Date: 2019
Source: Metals, 2019, v. 9, no. 10, 1023
Abstract: The microstructures and mechanical properties of the hot-rolled Fe-6.5wt.%Si sheet are analyzed. The microstructure of the hot-rolled sheet is layered along the thickness direction. The surface exhibits fine and equiaxed grains, whereas the center part shows coarse and elongated grains with a <101> fiber texture along the rolling direction. Serrated flow behavior is observed during tensile deformation of both the hot-rolled sheet and its center samples at 350 °C; thus, the serrated flow of the hot-rolled sheet is mainly attributed to the serration of the center part. The analyses of dislocation configurations, ordered structures, and crystal orientation show that the serrated flow behavior results from the interaction of solutes with mobile dislocations. Mobile dislocations are pinned by combining parallel forest dislocations with the pipe diffusion of solution atoms. This study provides a new perspective for the deformation mechanism of the Fe-6.5wt.%Si alloy.
Keywords: Fe-6.5wt.%Si alloy
Forest dislocation
Layered microstructure
Mobile dislocation
Pipe diffusion
Serrated flow
Publisher: Molecular Diversity Preservation International (MDPI)
Journal: Sensors (Switzerland) 
ISSN: 2075-4701
DOI: 10.3390/met9101023
Rights: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
The following publication Shi X, Liang Y, Liu B, Ding Z, Zhang B, Ye F. Serrated Flow Behavior of Hot-Rolled Fe-6.5wt.%Si Sheet with Layered Structure. Metals. 2019; 9(10):1023 is available at
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