Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles
In order to develop a new generation of high strength weathering steel for railway vehicle, V-N-Cr microalloyed Q690 weathering steel was produced by two-stage rolling, and the microstructures and mechanical properties were studied. The corrosion behavior of V-N-Cr microalloyed Q690 weathering steel...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2021-04-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000856 |
| _version_ | 1797969621384429568 |
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| author | LIU Yue DU Lin-xiu |
| author_facet | LIU Yue DU Lin-xiu |
| author_sort | LIU Yue |
| collection | DOAJ |
| description | In order to develop a new generation of high strength weathering steel for railway vehicle, V-N-Cr microalloyed Q690 weathering steel was produced by two-stage rolling, and the microstructures and mechanical properties were studied. The corrosion behavior of V-N-Cr microalloyed Q690 weathering steel and Q345 steel was studied by cyclic wet/dry corrosion tests. The results show that the microstructure of V-N-Cr microalloyed Q690 weathering steel is polygonal ferrite, acicular ferrite, lath bainite and a few M/A phase. The yield strength and tensile strength are 695 MPa and 815 MPa, respectively, with excellent impact performance. The crack propagation is effectively hindered by the interaction of grain boundaries with large and small angles. The surfaces of both kinds of steels have formed rust layer, and corrosion products mainly include α-FeOOH,β-FeOOH,γ-FeOOH and Fe<sub>3</sub>O<sub>4</sub>. After 360 h corrosion, the average corrosion rate of Q345 steel is 1.83 g/(h·cm<sup>2</sup>), and that of V-N-Cr weathering steel is 0.96 g/(h·cm<sup>2</sup>). |
| first_indexed | 2024-04-11T03:05:14Z |
| format | Article |
| id | doaj.art-98037bd130eb4ab08c6b32d330f0b77b |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T03:05:14Z |
| publishDate | 2021-04-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-98037bd130eb4ab08c6b32d330f0b77b2023-01-02T13:24:40ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812021-04-0149411111910.11868/j.issn.1001-4381.2019.00085620210412Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehiclesLIU Yue0DU Lin-xiu1State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaState Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaIn order to develop a new generation of high strength weathering steel for railway vehicle, V-N-Cr microalloyed Q690 weathering steel was produced by two-stage rolling, and the microstructures and mechanical properties were studied. The corrosion behavior of V-N-Cr microalloyed Q690 weathering steel and Q345 steel was studied by cyclic wet/dry corrosion tests. The results show that the microstructure of V-N-Cr microalloyed Q690 weathering steel is polygonal ferrite, acicular ferrite, lath bainite and a few M/A phase. The yield strength and tensile strength are 695 MPa and 815 MPa, respectively, with excellent impact performance. The crack propagation is effectively hindered by the interaction of grain boundaries with large and small angles. The surfaces of both kinds of steels have formed rust layer, and corrosion products mainly include α-FeOOH,β-FeOOH,γ-FeOOH and Fe<sub>3</sub>O<sub>4</sub>. After 360 h corrosion, the average corrosion rate of Q345 steel is 1.83 g/(h·cm<sup>2</sup>), and that of V-N-Cr weathering steel is 0.96 g/(h·cm<sup>2</sup>).http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000856high strengthweathering steelcorrosion behaviorrust layercyclic wet/dry corrosion test |
| spellingShingle | LIU Yue DU Lin-xiu Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles Cailiao gongcheng high strength weathering steel corrosion behavior rust layer cyclic wet/dry corrosion test |
| title | Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles |
| title_full | Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles |
| title_fullStr | Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles |
| title_full_unstemmed | Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles |
| title_short | Microstructure and corrosion behavior of V-N-Cr microalloyed Q690 high strength weathering steel for railway vehicles |
| title_sort | microstructure and corrosion behavior of v n cr microalloyed q690 high strength weathering steel for railway vehicles |
| topic | high strength weathering steel corrosion behavior rust layer cyclic wet/dry corrosion test |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000856 |
| work_keys_str_mv | AT liuyue microstructureandcorrosionbehaviorofvncrmicroalloyedq690highstrengthweatheringsteelforrailwayvehicles AT dulinxiu microstructureandcorrosionbehaviorofvncrmicroalloyedq690highstrengthweatheringsteelforrailwayvehicles |