Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls
High-speed steel (HSS) rolls modified by different additions of NbC were prepared. The microstructure of as-cast and heat-treated NbC-modified HSS rolls were observed by means of optical microscope (OM), scanning electron microscope (SEM) and energy spectroscopy (EDS), combining with the result of d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423018124 |
| _version_ | 1797646721990262784 |
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| author | Hao-nan Li Bo-han Zhang Gui-ying Qiao Nai-bo Yuan Fu-ren Xiao |
| author_facet | Hao-nan Li Bo-han Zhang Gui-ying Qiao Nai-bo Yuan Fu-ren Xiao |
| author_sort | Hao-nan Li |
| collection | DOAJ |
| description | High-speed steel (HSS) rolls modified by different additions of NbC were prepared. The microstructure of as-cast and heat-treated NbC-modified HSS rolls were observed by means of optical microscope (OM), scanning electron microscope (SEM) and energy spectroscopy (EDS), combining with the result of dissolution behavior of NbC particles and interface energy of NbC/γ-Fe calculated by dissolution kinetic and first-principle, the effect of addition of NbC on microstructure of HSS rolls were discussed. Results show that NbC particles do not dissolve in melt under experimental conditions, and the NbC particles even coarsen due to the absorption of alloying elements during the subsequent cooling process. The NbC particles can act as the heterogeneous nucleuses of pre-eutectic austenite to refine the as-cast microstructure of HSS rolls. However, the added amount of NbC particles influence the distribution of NbC. With the increase of the amount of NbC particles, the distribution of NbC particles changes from austenite inter-dendrite region to dendrite. The NbC particles distributed in austenite inter-dendrite region can restrain the movement of solid-liquid interface, and refine the as-cast microstructure. The distribution of NbC within the austenite dendrites enhances the potential of NbC as a non-homogeneous phase nucleus, thereby further refining the microstructure. |
| first_indexed | 2024-03-11T15:06:52Z |
| format | Article |
| id | doaj.art-70ac8bd8b23741f584824a881ae7fccc |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:06:52Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-70ac8bd8b23741f584824a881ae7fccc2023-10-30T06:03:03ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012616971711Refinement effect of NbC particle additions on the microstructure of high-speed steel rollsHao-nan Li0Bo-han Zhang1Gui-ying Qiao2Nai-bo Yuan3Fu-ren Xiao4Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaKey Lab of Metastable Materials Science & Technology, Hebei Key Lab for Optimizing Metal Product Technology and Performance, College of Materials Science & Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; Key Lab of Metastable Materials Science & Technology, Hebei Key Lab for Optimizing Metal Product Technology and Performance, College of Materials Science & Engineering, Yanshan University, Qinhuangdao 066004, China; Corresponding author. Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.Hebei Technology Innovation Centre for Roller Green Manufacturing, Co., Xingtai Delong Machinery & Mill Roll Ltd., Xingtai 054009, ChinaKey Lab of Metastable Materials Science & Technology, Hebei Key Lab for Optimizing Metal Product Technology and Performance, College of Materials Science & Engineering, Yanshan University, Qinhuangdao 066004, China; Corresponding author.High-speed steel (HSS) rolls modified by different additions of NbC were prepared. The microstructure of as-cast and heat-treated NbC-modified HSS rolls were observed by means of optical microscope (OM), scanning electron microscope (SEM) and energy spectroscopy (EDS), combining with the result of dissolution behavior of NbC particles and interface energy of NbC/γ-Fe calculated by dissolution kinetic and first-principle, the effect of addition of NbC on microstructure of HSS rolls were discussed. Results show that NbC particles do not dissolve in melt under experimental conditions, and the NbC particles even coarsen due to the absorption of alloying elements during the subsequent cooling process. The NbC particles can act as the heterogeneous nucleuses of pre-eutectic austenite to refine the as-cast microstructure of HSS rolls. However, the added amount of NbC particles influence the distribution of NbC. With the increase of the amount of NbC particles, the distribution of NbC particles changes from austenite inter-dendrite region to dendrite. The NbC particles distributed in austenite inter-dendrite region can restrain the movement of solid-liquid interface, and refine the as-cast microstructure. The distribution of NbC within the austenite dendrites enhances the potential of NbC as a non-homogeneous phase nucleus, thereby further refining the microstructure.http://www.sciencedirect.com/science/article/pii/S2238785423018124High-speed steelNbCCarbidesMicrostructureRefinement |
| spellingShingle | Hao-nan Li Bo-han Zhang Gui-ying Qiao Nai-bo Yuan Fu-ren Xiao Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls Journal of Materials Research and Technology High-speed steel NbC Carbides Microstructure Refinement |
| title | Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls |
| title_full | Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls |
| title_fullStr | Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls |
| title_full_unstemmed | Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls |
| title_short | Refinement effect of NbC particle additions on the microstructure of high-speed steel rolls |
| title_sort | refinement effect of nbc particle additions on the microstructure of high speed steel rolls |
| topic | High-speed steel NbC Carbides Microstructure Refinement |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423018124 |
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