RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT
To improve the bending formability of Q960 structural steel plate, the internal structure of the steel plate was enhanced by pulse current assisted method. The bending resilience difference of Q960 structural steel plate was measured when it is subjected to pulse current. The alloy was subjected to...
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| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2022-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.04.032 |
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| _version_ | 1841535992178147328 |
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| author | MA Nan WANG SuYing WANG Lin LI YingLe |
| author_facet | MA Nan WANG SuYing WANG Lin LI YingLe |
| author_sort | MA Nan |
| collection | DOAJ |
| description | To improve the bending formability of Q960 structural steel plate, the internal structure of the steel plate was enhanced by pulse current assisted method. The bending resilience difference of Q960 structural steel plate was measured when it is subjected to pulse current. The alloy was subjected to different pulse current densities for bending test, and the change of microstructure morphology was observed. Results show that the deviation coefficients of neutral layer are above 0.5 after 90°V bending test. When the current density increases, the specimen changes from elastic deformation to plastic deformation, and the temperature of the specimen increases continuously. When electrically assisted treatment is applied to the sample, the bending rebound Angle decreases with the increase of current density. When the current density reaches 2.5 A/mm~2, no rebound phenomenon can be observed. Few twin crystals will appear with gradual increase of the current density in the bending process. A large number of equiaxed crystal structures are formed on the outer side, showing the characteristics of slip plastic deformation, resulting in a slightly asymmetric tension and compression state. With a grain size of 13 μm or so, the microstructure of the base plane slips due to electroplastic action, which realizes the plastic transformation of the material without twin coordination. The research is of great significance to improve the mechanical properties of building structural steel, especially for high-rise buildings. |
| format | Article |
| id | doaj-art-049333a925e14c189c9db68999ee577c |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-049333a925e14c189c9db68999ee577c2025-01-15T02:24:09ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-014499199529914321RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENTMA NanWANG SuYingWANG LinLI YingLeTo improve the bending formability of Q960 structural steel plate, the internal structure of the steel plate was enhanced by pulse current assisted method. The bending resilience difference of Q960 structural steel plate was measured when it is subjected to pulse current. The alloy was subjected to different pulse current densities for bending test, and the change of microstructure morphology was observed. Results show that the deviation coefficients of neutral layer are above 0.5 after 90°V bending test. When the current density increases, the specimen changes from elastic deformation to plastic deformation, and the temperature of the specimen increases continuously. When electrically assisted treatment is applied to the sample, the bending rebound Angle decreases with the increase of current density. When the current density reaches 2.5 A/mm~2, no rebound phenomenon can be observed. Few twin crystals will appear with gradual increase of the current density in the bending process. A large number of equiaxed crystal structures are formed on the outer side, showing the characteristics of slip plastic deformation, resulting in a slightly asymmetric tension and compression state. With a grain size of 13 μm or so, the microstructure of the base plane slips due to electroplastic action, which realizes the plastic transformation of the material without twin coordination. The research is of great significance to improve the mechanical properties of building structural steel, especially for high-rise buildings.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.04.032Pulse current assistQ960 steel plateBending formingMicrostructureSpringbackTwinPlastic deformation |
| spellingShingle | MA Nan WANG SuYing WANG Lin LI YingLe RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT Jixie qiangdu Pulse current assist Q960 steel plate Bending forming Microstructure Springback Twin Plastic deformation |
| title | RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT |
| title_full | RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT |
| title_fullStr | RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT |
| title_full_unstemmed | RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT |
| title_short | RESEARCH ON BENDING FORMABILITY OF Q960 STRUCTURAL STEEL PLATE ASSISTED BY PULSE CURRENT |
| title_sort | research on bending formability of q960 structural steel plate assisted by pulse current |
| topic | Pulse current assist Q960 steel plate Bending forming Microstructure Springback Twin Plastic deformation |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.04.032 |
| work_keys_str_mv | AT manan researchonbendingformabilityofq960structuralsteelplateassistedbypulsecurrent AT wangsuying researchonbendingformabilityofq960structuralsteelplateassistedbypulsecurrent AT wanglin researchonbendingformabilityofq960structuralsteelplateassistedbypulsecurrent AT liyingle researchonbendingformabilityofq960structuralsteelplateassistedbypulsecurrent |