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Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling

Rough- and intermediate-rolled composite billets and finished clad rebars were cut using flying shears. The law of metal rheology and the mechanism of composite interface generation during clad rebar formation were then investigated using metallographic microscopy, electron backscatter diffraction,...

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Autores principales: Li, Zhen, Qian, Xuehai, Xiang, Yong, Zeng, Lei, Zhuang, Zecheng, Tan, Jianping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9653682/
https://www.ncbi.nlm.nih.gov/pubmed/36363326
http://dx.doi.org/10.3390/ma15217735
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author Li, Zhen
Qian, Xuehai
Xiang, Yong
Zeng, Lei
Zhuang, Zecheng
Tan, Jianping
author_facet Li, Zhen
Qian, Xuehai
Xiang, Yong
Zeng, Lei
Zhuang, Zecheng
Tan, Jianping
author_sort Li, Zhen
collection PubMed
description Rough- and intermediate-rolled composite billets and finished clad rebars were cut using flying shears. The law of metal rheology and the mechanism of composite interface generation during clad rebar formation were then investigated using metallographic microscopy, electron backscatter diffraction, and scanning electron microscopy. The radial deformation trend of the clad rebars was greater than that of HRB400 rebars and “ears” were more likely to appear during the rolling process. The widths of the decarburization and composite zones and diffusion distances of each element decreased as the cumulative reduction rate increased. Furthermore, as deformation increased, the number of oxides on the composite interface significantly decreased, the proportion of recrystallized grains increased, and the grains became more refined. These changes led to increases in the bond and tensile strengths of the composite interface. According to the research above, the pass filling degree should be within 0.85–0.9 and the cumulative reduction rate should be over 80% when rolling clad rebars.
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spelling pubmed-96536822022-11-15 Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling Li, Zhen Qian, Xuehai Xiang, Yong Zeng, Lei Zhuang, Zecheng Tan, Jianping Materials (Basel) Article Rough- and intermediate-rolled composite billets and finished clad rebars were cut using flying shears. The law of metal rheology and the mechanism of composite interface generation during clad rebar formation were then investigated using metallographic microscopy, electron backscatter diffraction, and scanning electron microscopy. The radial deformation trend of the clad rebars was greater than that of HRB400 rebars and “ears” were more likely to appear during the rolling process. The widths of the decarburization and composite zones and diffusion distances of each element decreased as the cumulative reduction rate increased. Furthermore, as deformation increased, the number of oxides on the composite interface significantly decreased, the proportion of recrystallized grains increased, and the grains became more refined. These changes led to increases in the bond and tensile strengths of the composite interface. According to the research above, the pass filling degree should be within 0.85–0.9 and the cumulative reduction rate should be over 80% when rolling clad rebars. MDPI 2022-11-03 /pmc/articles/PMC9653682/ /pubmed/36363326 http://dx.doi.org/10.3390/ma15217735 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Zhen
Qian, Xuehai
Xiang, Yong
Zeng, Lei
Zhuang, Zecheng
Tan, Jianping
Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title_full Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title_fullStr Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title_full_unstemmed Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title_short Profile Change Law of Clad Rebars and the Formation Mechanism of Composite Interfaces during Hot Rolling
title_sort profile change law of clad rebars and the formation mechanism of composite interfaces during hot rolling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9653682/
https://www.ncbi.nlm.nih.gov/pubmed/36363326
http://dx.doi.org/10.3390/ma15217735
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