Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method
The formation of pearlite in three high-carbon steels with different Nb and V additions was directly observed using a high-temperature laser scanning confocal microscope. The number densities and growth rates of pearlite nodules, and the overall pearlite transformation kinetics of pearlite were meas...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000328 |
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| author | Keduo Yu Mingxing Zhou Min Zhu Houxin Wang Zhenye Chen Weifan Yin Xue Su Junyu Tian Guang Xu |
| author_facet | Keduo Yu Mingxing Zhou Min Zhu Houxin Wang Zhenye Chen Weifan Yin Xue Su Junyu Tian Guang Xu |
| author_sort | Keduo Yu |
| collection | DOAJ |
| description | The formation of pearlite in three high-carbon steels with different Nb and V additions was directly observed using a high-temperature laser scanning confocal microscope. The number densities and growth rates of pearlite nodules, and the overall pearlite transformation kinetics of pearlite were measured based on the in-situ observation results. The results show that Nb and V increase the pearlite nucleation rate due to different mechanisms. The refinement of prior austenite grain by Nb and the promotion of intragranular pearlite nucleation by V separately increase the nucleation rate. The formation of grain boundary pearlite and intragranular pearlite compete with each other in the V microalloyed steel, and the contribution of intragranular pearlite on the nucleation rate continuously increases as the transformation proceeds. In addition, the pearlite growth rate is reduced by Nb and V, resulting in the retardation of overall transformation kinetics. Moreover, the promotion of Nb on pearlite nucleation rate and its hindrance on pearlite growth and overall transformation kinetics are more pronounced than those of V. |
| format | Article |
| id | doaj-art-06f8d063dc6d4d9dae825f8607343b79 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-06f8d063dc6d4d9dae825f8607343b792025-01-11T06:41:32ZengElsevierJournal of Materials Research and Technology2238-78542025-03-0135317324Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ methodKeduo Yu0Mingxing Zhou1Min Zhu2Houxin Wang3Zhenye Chen4Weifan Yin5Xue Su6Junyu Tian7Guang Xu8The State Key Laboratory of Refractories and Metallurgy, The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; Corresponding author.Central Research Institute of Baoshan Iron & Steel Co., Ltd., Wuhan 430080, ChinaCITIC-CBMM Microalloying Technology Center, Beijing 100004, ChinaHBIS Company Limited, Shijiazhuang 050000, ChinaChina Railway Wuhan Group Co., Ltd., Wuhan 430080, ChinaThe State Key Laboratory of Refractories and Metallurgy, The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe formation of pearlite in three high-carbon steels with different Nb and V additions was directly observed using a high-temperature laser scanning confocal microscope. The number densities and growth rates of pearlite nodules, and the overall pearlite transformation kinetics of pearlite were measured based on the in-situ observation results. The results show that Nb and V increase the pearlite nucleation rate due to different mechanisms. The refinement of prior austenite grain by Nb and the promotion of intragranular pearlite nucleation by V separately increase the nucleation rate. The formation of grain boundary pearlite and intragranular pearlite compete with each other in the V microalloyed steel, and the contribution of intragranular pearlite on the nucleation rate continuously increases as the transformation proceeds. In addition, the pearlite growth rate is reduced by Nb and V, resulting in the retardation of overall transformation kinetics. Moreover, the promotion of Nb on pearlite nucleation rate and its hindrance on pearlite growth and overall transformation kinetics are more pronounced than those of V.http://www.sciencedirect.com/science/article/pii/S2238785425000328PearliteNiobiumVanadiumNucleationGrowth |
| spellingShingle | Keduo Yu Mingxing Zhou Min Zhu Houxin Wang Zhenye Chen Weifan Yin Xue Su Junyu Tian Guang Xu Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method Journal of Materials Research and Technology Pearlite Niobium Vanadium Nucleation Growth |
| title | Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method |
| title_full | Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method |
| title_fullStr | Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method |
| title_full_unstemmed | Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method |
| title_short | Comparative study on the effects of Nb and V on the nucleation and growth of pearlite in high-carbon steels using in-situ method |
| title_sort | comparative study on the effects of nb and v on the nucleation and growth of pearlite in high carbon steels using in situ method |
| topic | Pearlite Niobium Vanadium Nucleation Growth |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000328 |
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