Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate
The inhomogeneity of microstructures and mechanical properties in an as-quenched thin specification NM450TP wear-resistant steel plate were quantitatively investigated. The results show that the microstructures exhibit inhomogeneous distribution through the thickness and the area percentage of marte...
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MDPI AG
2023-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/12/7017 |
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| author | Guannan Li Shuqing Lu Jie Ren Zheng Zhou |
| author_facet | Guannan Li Shuqing Lu Jie Ren Zheng Zhou |
| author_sort | Guannan Li |
| collection | DOAJ |
| description | The inhomogeneity of microstructures and mechanical properties in an as-quenched thin specification NM450TP wear-resistant steel plate were quantitatively investigated. The results show that the microstructures exhibit inhomogeneous distribution through the thickness and the area percentage of martensite and ferrite grains varies regularly through the thickness, and the content of ferrite on the top surface of the plate is found to be two times that of ferrite at the core location and more than that of ferrite at the bottom surface. In addition, the steel plate exhibits the obvious anisotropy of tensile properties, the tensile strength paralleling to the rolling direction is lower than that along the transverse direction while the elongation paralleling to the rolling direction is better than that along the transverse direction. The result indicates that the deformation degree of prior austenite grains during hot rolling and the content of martensite after quenching dominate the mechanical properties while the ferrite content is not the main factor affecting the plasticity. The findings provide experimental evidences and lay a theoretical foundation for analyzing the subsequent processing. |
| first_indexed | 2024-03-11T02:48:33Z |
| format | Article |
| id | doaj.art-349d84d689f14165bce6b79593badee2 |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T02:48:33Z |
| publishDate | 2023-06-01 |
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| spelling | doaj.art-349d84d689f14165bce6b79593badee22023-11-18T09:07:47ZengMDPI AGApplied Sciences2076-34172023-06-011312701710.3390/app13127017Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel PlateGuannan Li0Shuqing Lu1Jie Ren2Zheng Zhou3Technical Center, Handan Iron and Steel Group Co., Ltd., Handan 056015, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaThe inhomogeneity of microstructures and mechanical properties in an as-quenched thin specification NM450TP wear-resistant steel plate were quantitatively investigated. The results show that the microstructures exhibit inhomogeneous distribution through the thickness and the area percentage of martensite and ferrite grains varies regularly through the thickness, and the content of ferrite on the top surface of the plate is found to be two times that of ferrite at the core location and more than that of ferrite at the bottom surface. In addition, the steel plate exhibits the obvious anisotropy of tensile properties, the tensile strength paralleling to the rolling direction is lower than that along the transverse direction while the elongation paralleling to the rolling direction is better than that along the transverse direction. The result indicates that the deformation degree of prior austenite grains during hot rolling and the content of martensite after quenching dominate the mechanical properties while the ferrite content is not the main factor affecting the plasticity. The findings provide experimental evidences and lay a theoretical foundation for analyzing the subsequent processing.https://www.mdpi.com/2076-3417/13/12/7017NM450TPinhomogeneityhigh-strength steelas-quenchedanisotropy |
| spellingShingle | Guannan Li Shuqing Lu Jie Ren Zheng Zhou Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate Applied Sciences NM450TP inhomogeneity high-strength steel as-quenched anisotropy |
| title | Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate |
| title_full | Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate |
| title_fullStr | Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate |
| title_full_unstemmed | Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate |
| title_short | Through-Thickness Inhomogeneity of Microstructures and Mechanical Properties in an As-Quenched Thin Specification High Strength NM450TP Steel Plate |
| title_sort | through thickness inhomogeneity of microstructures and mechanical properties in an as quenched thin specification high strength nm450tp steel plate |
| topic | NM450TP inhomogeneity high-strength steel as-quenched anisotropy |
| url | https://www.mdpi.com/2076-3417/13/12/7017 |
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