The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling
This study focuses on exploring the effects of niobium (Nb)-microalloying on the properties of steel for ultra-high-strength bridge cables during hot-rolling processes. We employed a combination of dual-pass compression tests, stress–strain curve analysis, and Electron Backscatter Diffraction (EBSD)...
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MDPI AG
2024-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/6/1259 |
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| author | Jie Zhou Zhichao Yu Jiahui Chen Sheng Wu Kaiming Wu Libo Pan |
| author_facet | Jie Zhou Zhichao Yu Jiahui Chen Sheng Wu Kaiming Wu Libo Pan |
| author_sort | Jie Zhou |
| collection | DOAJ |
| description | This study focuses on exploring the effects of niobium (Nb)-microalloying on the properties of steel for ultra-high-strength bridge cables during hot-rolling processes. We employed a combination of dual-pass compression tests, stress–strain curve analysis, and Electron Backscatter Diffraction (EBSD) techniques to investigate the influence of Nb-microalloying on the static recrystallization behavior and grain size of the steel. The key findings reveal that Nb-microalloying effectively inhibits static recrystallization, particularly at higher temperatures, significantly reducing the volume fraction of recrystallized grains, resulting in a finer grain size and enhanced deformation resistance. Secondly, at a deformation temperature of 975 °C, Nb-containing steel exhibited finer grain sizes compared to Nb-free steel when held for 10 to 50 s; however, the grain size growth accelerated when the hold time exceeded 50 s, likely linked to the increased deformation resistance induced by Nb. Lastly, this research proposes optimal hot-rolling process parameters for new bridge cable steel, recommending specific finishing rolling temperatures and inter-pass times for both Nb-containing and Nb-free steels during the roughing and finishing stages. This study suggests optimal hot-rolling parameters for both Nb-containing and Nb-free steels, providing essential insights for improving hot-rolling and microalloying processes in high-carbon steels for bridge cables. |
| first_indexed | 2024-04-24T18:04:15Z |
| format | Article |
| id | doaj.art-e2615d31444e4df497956c48e4731adc |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-24T18:04:15Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e2615d31444e4df497956c48e4731adc2024-03-27T13:52:21ZengMDPI AGMaterials1996-19442024-03-01176125910.3390/ma17061259The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot RollingJie Zhou0Zhichao Yu1Jiahui Chen2Sheng Wu3Kaiming Wu4Libo Pan5College of Intelligent Manufacturing, Jianghan University, Wuhan 430080, ChinaCollege of Intelligent Manufacturing, Jianghan University, Wuhan 430080, ChinaCollege of Intelligent Manufacturing, Jianghan University, Wuhan 430080, ChinaCollege of Intelligent Manufacturing, Jianghan University, Wuhan 430080, ChinaThe State Key Laboratory of Refractories and Metallurgy, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430080, ChinaCollege of Intelligent Manufacturing, Jianghan University, Wuhan 430080, ChinaThis study focuses on exploring the effects of niobium (Nb)-microalloying on the properties of steel for ultra-high-strength bridge cables during hot-rolling processes. We employed a combination of dual-pass compression tests, stress–strain curve analysis, and Electron Backscatter Diffraction (EBSD) techniques to investigate the influence of Nb-microalloying on the static recrystallization behavior and grain size of the steel. The key findings reveal that Nb-microalloying effectively inhibits static recrystallization, particularly at higher temperatures, significantly reducing the volume fraction of recrystallized grains, resulting in a finer grain size and enhanced deformation resistance. Secondly, at a deformation temperature of 975 °C, Nb-containing steel exhibited finer grain sizes compared to Nb-free steel when held for 10 to 50 s; however, the grain size growth accelerated when the hold time exceeded 50 s, likely linked to the increased deformation resistance induced by Nb. Lastly, this research proposes optimal hot-rolling process parameters for new bridge cable steel, recommending specific finishing rolling temperatures and inter-pass times for both Nb-containing and Nb-free steels during the roughing and finishing stages. This study suggests optimal hot-rolling parameters for both Nb-containing and Nb-free steels, providing essential insights for improving hot-rolling and microalloying processes in high-carbon steels for bridge cables.https://www.mdpi.com/1996-1944/17/6/1259niobium-microalloyingbridge cableshot-rolling processrecrystallization softeningelectron backscatter diffraction analysis |
| spellingShingle | Jie Zhou Zhichao Yu Jiahui Chen Sheng Wu Kaiming Wu Libo Pan The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling Materials niobium-microalloying bridge cables hot-rolling process recrystallization softening electron backscatter diffraction analysis |
| title | The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling |
| title_full | The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling |
| title_fullStr | The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling |
| title_full_unstemmed | The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling |
| title_short | The Performance of Niobium-Microalloying Ultra-High-Strength Bridge Cable Steel during Hot Rolling |
| title_sort | performance of niobium microalloying ultra high strength bridge cable steel during hot rolling |
| topic | niobium-microalloying bridge cables hot-rolling process recrystallization softening electron backscatter diffraction analysis |
| url | https://www.mdpi.com/1996-1944/17/6/1259 |
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