Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method
The Cr5/42CrMo and 45#/45# composite rolls had been produced by the electroslag remelting cladding (ESRC) method. The interface bonding mechanism was revealed according to grain and dendrite growth. The dendrites of cladding started an epitaxial growth on the partially melted grains and the grains b...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422009334 |
| _version_ | 1817999736730288128 |
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| author | Zhiwen Hou Yanwu Dong Zhouhua Jiang Lev Medovar Ganna Stovpchenko Tao Zou Jun Huang Xinwei Wang Junwei Dong |
| author_facet | Zhiwen Hou Yanwu Dong Zhouhua Jiang Lev Medovar Ganna Stovpchenko Tao Zou Jun Huang Xinwei Wang Junwei Dong |
| author_sort | Zhiwen Hou |
| collection | DOAJ |
| description | The Cr5/42CrMo and 45#/45# composite rolls had been produced by the electroslag remelting cladding (ESRC) method. The interface bonding mechanism was revealed according to grain and dendrite growth. The dendrites of cladding started an epitaxial growth on the partially melted grains and the grains boundaries of cladding grew following the orientation of the partially melted grains of the roll core, ensuring reliable metallurgical bonding between the cladding and the roll core. The heat treatment included the normalizing, annealing, quenching, and tempering process. During the annealing process, the ferrite zone formed on the roll core side because the C atoms diffused from the roll core of low C content to the cladding of high C content for the activity difference. During the quenching process, C atoms diffused from the cladding to the roll core, and the ferrite zone disappeared which ensured the continuous microhardness. The gradient of elements contents on both sides of the interface led to the distinctive difference in microstructure and properties. After the heat treatment, from the cladding to the roll core, the microstructures changed from martensite + carbides to pearlite + ferrite. Accordingly, the values of the Rockwell hardness (HRC) 53.6 and 25.7, the tensile strength (MPa) 1657 and 879, and the impact toughness (J/cm2) 5 to 54 were achieved in the cladding and roll core, respectively. The composite rolls had the cladding of high hardness and roll core of superior impact toughness that could satisfy the requirement for backup rolls of hot strip mills. |
| first_indexed | 2024-04-14T03:13:03Z |
| format | Article |
| id | doaj.art-d6cb60d3e05144a29e31fdbe7b139481 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-14T03:13:03Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d6cb60d3e05144a29e31fdbe7b1394812022-12-22T02:15:33ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011941154127Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding methodZhiwen Hou0Yanwu Dong1Zhouhua Jiang2Lev Medovar3Ganna Stovpchenko4Tao Zou5Jun Huang6Xinwei Wang7Junwei Dong8School of Metallurgy, Northeastern University, Shenyang, 110819 China; Fushun Special Steel CO., LTD Technology Center, Fushun, 113000, ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819 China; State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, China; Corresponding author.School of Metallurgy, Northeastern University, Shenyang, 110819 China; State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, ChinaE.O. Paton Welding Institute of Ukraine, 03150 Kyiv, Ukraine; P.C. “ELMET-ROLL”, 03150, Kyiv, UkraineE.O. Paton Welding Institute of Ukraine, 03150 Kyiv, Ukraine; P.C. “ELMET-ROLL”, 03150, Kyiv, UkraineSchool of Metallurgy, Northeastern University, Shenyang, 110819 ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819 ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819 ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819 ChinaThe Cr5/42CrMo and 45#/45# composite rolls had been produced by the electroslag remelting cladding (ESRC) method. The interface bonding mechanism was revealed according to grain and dendrite growth. The dendrites of cladding started an epitaxial growth on the partially melted grains and the grains boundaries of cladding grew following the orientation of the partially melted grains of the roll core, ensuring reliable metallurgical bonding between the cladding and the roll core. The heat treatment included the normalizing, annealing, quenching, and tempering process. During the annealing process, the ferrite zone formed on the roll core side because the C atoms diffused from the roll core of low C content to the cladding of high C content for the activity difference. During the quenching process, C atoms diffused from the cladding to the roll core, and the ferrite zone disappeared which ensured the continuous microhardness. The gradient of elements contents on both sides of the interface led to the distinctive difference in microstructure and properties. After the heat treatment, from the cladding to the roll core, the microstructures changed from martensite + carbides to pearlite + ferrite. Accordingly, the values of the Rockwell hardness (HRC) 53.6 and 25.7, the tensile strength (MPa) 1657 and 879, and the impact toughness (J/cm2) 5 to 54 were achieved in the cladding and roll core, respectively. The composite rolls had the cladding of high hardness and roll core of superior impact toughness that could satisfy the requirement for backup rolls of hot strip mills.http://www.sciencedirect.com/science/article/pii/S2238785422009334Composite rollsInterface bonding mechanismTransition zoneHeat treatmentMechanical properties |
| spellingShingle | Zhiwen Hou Yanwu Dong Zhouhua Jiang Lev Medovar Ganna Stovpchenko Tao Zou Jun Huang Xinwei Wang Junwei Dong Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method Journal of Materials Research and Technology Composite rolls Interface bonding mechanism Transition zone Heat treatment Mechanical properties |
| title | Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| title_full | Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| title_fullStr | Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| title_full_unstemmed | Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| title_short | Interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| title_sort | interface bonding mechanism and heat treatment of the composite roll manufactured by electroslag remelting cladding method |
| topic | Composite rolls Interface bonding mechanism Transition zone Heat treatment Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422009334 |
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