skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Microstructural characteristics and texture of hot strip low carbon steel produced by flexible thin slab rolling with warm rolling technology

Abstract

The mechanical properties and development of microstructure and texture of a low carbon steel produced by Flexible Thin Slab Rolling (FTSR) with warm rolling technology were investigated using scanning electron microscopy, transmission electron microscopy, electron back-scattered diffraction and X-ray diffraction etc. The microstructural features in the hot strip are mainly large polygonal ferrite grains with very few or hardly any pearlite colonies. The values of yield strength and tensile strength are in the range of 215-240 MPa and 305-335 MPa, respectively, and the elongation is in the range of 33-41%. The ferrite softening can be attributed to ferrite recrystallization. Even though the dominant bulk texture is the typical recrystallization texture, which can be grouped into the ND fibre ({l_brace}111{r_brace}<110-112>) having a <111> axis parallel to the normal direction, a weak {l_brace}110{r_brace}<112> transformation texture was also observed in the final microstructure by electron back-scattered diffraction. By analysis, the large grain size is explained in terms of ferrite recrystallization and relevant growth mechanisms, and the ferrite recrystallization can be considered to play a major role in determining the grain size in the microstructure of the low carbon steel produced by FTSR with warm rolling technology.

Authors:
 [1];  [2];  [2];  [2];  [3]
  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China). E-mail: yhzhmr@sina.com
  2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)
  3. Tangshan Iron and Steel Co. LTD., Tangshan 063016 (China)
Publication Date:
OSTI Identifier:
20833192
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 56; Journal Issue: 2; Other Information: DOI: 10.1016/j.matchar.2005.10.008; PII: S1044-5803(05)00239-1; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON STEELS; FERRITE; GRAIN SIZE; RECRYSTALLIZATION; ROLLING; SCANNING ELECTRON MICROSCOPY; TENSILE PROPERTIES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; YIELD STRENGTH

Citation Formats

Yu Hao, Kang Yonglin, Zhao Zhengzhi, Wang Xin, and Chen Libin. Microstructural characteristics and texture of hot strip low carbon steel produced by flexible thin slab rolling with warm rolling technology. United States: N. p., 2006. Web. doi:10.1016/j.matchar.2005.10.008.
Yu Hao, Kang Yonglin, Zhao Zhengzhi, Wang Xin, & Chen Libin. Microstructural characteristics and texture of hot strip low carbon steel produced by flexible thin slab rolling with warm rolling technology. United States. doi:10.1016/j.matchar.2005.10.008.
Yu Hao, Kang Yonglin, Zhao Zhengzhi, Wang Xin, and Chen Libin. Wed . "Microstructural characteristics and texture of hot strip low carbon steel produced by flexible thin slab rolling with warm rolling technology". United States. doi:10.1016/j.matchar.2005.10.008.
@article{osti_20833192,
title = {Microstructural characteristics and texture of hot strip low carbon steel produced by flexible thin slab rolling with warm rolling technology},
author = {Yu Hao and Kang Yonglin and Zhao Zhengzhi and Wang Xin and Chen Libin},
abstractNote = {The mechanical properties and development of microstructure and texture of a low carbon steel produced by Flexible Thin Slab Rolling (FTSR) with warm rolling technology were investigated using scanning electron microscopy, transmission electron microscopy, electron back-scattered diffraction and X-ray diffraction etc. The microstructural features in the hot strip are mainly large polygonal ferrite grains with very few or hardly any pearlite colonies. The values of yield strength and tensile strength are in the range of 215-240 MPa and 305-335 MPa, respectively, and the elongation is in the range of 33-41%. The ferrite softening can be attributed to ferrite recrystallization. Even though the dominant bulk texture is the typical recrystallization texture, which can be grouped into the ND fibre ({l_brace}111{r_brace}<110-112>) having a <111> axis parallel to the normal direction, a weak {l_brace}110{r_brace}<112> transformation texture was also observed in the final microstructure by electron back-scattered diffraction. By analysis, the large grain size is explained in terms of ferrite recrystallization and relevant growth mechanisms, and the ferrite recrystallization can be considered to play a major role in determining the grain size in the microstructure of the low carbon steel produced by FTSR with warm rolling technology.},
doi = {10.1016/j.matchar.2005.10.008},
journal = {Materials Characterization},
number = 2,
volume = 56,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}