Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures
In this paper, the microstructure of Mo-type seismic refractory steel for building g, as well as different boundary densities and boundary ratios, are combined with elevated-temperature mechanical properties analysis to explore the laws of boundary for high-temperature performance. The results show...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ace29b |
| _version_ | 1797746431668256768 |
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| author | Hong-Yu Wu Jing-Hua Cong Qi Liu Jing-Xiao Zhao Zhi-Quan Wang Xue-Min Wang Peng-Cheng Liu |
| author_facet | Hong-Yu Wu Jing-Hua Cong Qi Liu Jing-Xiao Zhao Zhi-Quan Wang Xue-Min Wang Peng-Cheng Liu |
| author_sort | Hong-Yu Wu |
| collection | DOAJ |
| description | In this paper, the microstructure of Mo-type seismic refractory steel for building g, as well as different boundary densities and boundary ratios, are combined with elevated-temperature mechanical properties analysis to explore the laws of boundary for high-temperature performance. The results show that salt water cooling (SWC) and water cooling (WC) can obtain lath bainite with a higher content, and oil cooling (OC) with a lower cooling rate can obtain the microstructure of multiphase bainite + bulk ferrite. The boundary characterization results show that when the sample contains more high angle grain boundaries (Block and High-Packet boundaries), and the dislocation density is high, it can make it have better mechanical properties at room temperature. When the content of low angle boundary and low interfacial energy twin boundary (Σ3 boundary, which is mainly composed of V1/V2 variant pair) is high, it will have better microstructure stability after high temperature tempering, and the boundary density and dislocation density will decrease slightly, ensuring that it has better refractory performance. |
| first_indexed | 2024-03-12T15:36:43Z |
| format | Article |
| id | doaj.art-cfc3a4ceda6a4684bf3a8ed9811d3c91 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:36:43Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-cfc3a4ceda6a4684bf3a8ed9811d3c912023-08-09T16:11:17ZengIOP PublishingMaterials Research Express2053-15912023-01-0110707651010.1088/2053-1591/ace29bResearch on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structuresHong-Yu Wu0https://orcid.org/0000-0001-5214-2439Jing-Hua Cong1https://orcid.org/0000-0002-9341-5592Qi Liu2Jing-Xiao Zhao3Zhi-Quan Wang4Xue-Min Wang5Peng-Cheng Liu6Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaMetallurgical Technology Institute, Central Iron Steel Research Institute Co. Ltd, Beijing 100081, People’s Republic of ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaAnsteel Beijing Research Institute Co. Ltd, Beijing 102200, People’s Republic of ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaIn this paper, the microstructure of Mo-type seismic refractory steel for building g, as well as different boundary densities and boundary ratios, are combined with elevated-temperature mechanical properties analysis to explore the laws of boundary for high-temperature performance. The results show that salt water cooling (SWC) and water cooling (WC) can obtain lath bainite with a higher content, and oil cooling (OC) with a lower cooling rate can obtain the microstructure of multiphase bainite + bulk ferrite. The boundary characterization results show that when the sample contains more high angle grain boundaries (Block and High-Packet boundaries), and the dislocation density is high, it can make it have better mechanical properties at room temperature. When the content of low angle boundary and low interfacial energy twin boundary (Σ3 boundary, which is mainly composed of V1/V2 variant pair) is high, it will have better microstructure stability after high temperature tempering, and the boundary density and dislocation density will decrease slightly, ensuring that it has better refractory performance.https://doi.org/10.1088/2053-1591/ace29bcooling rateboundaryΣ3 grain boundaryvariantrefractory properties |
| spellingShingle | Hong-Yu Wu Jing-Hua Cong Qi Liu Jing-Xiao Zhao Zhi-Quan Wang Xue-Min Wang Peng-Cheng Liu Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures Materials Research Express cooling rate boundary Σ3 grain boundary variant refractory properties |
| title | Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures |
| title_full | Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures |
| title_fullStr | Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures |
| title_full_unstemmed | Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures |
| title_short | Research on influence of grain boundaries on the mechanical properties of 460 MPa refractory steel used for high-strength building structures |
| title_sort | research on influence of grain boundaries on the mechanical properties of 460 mpa refractory steel used for high strength building structures |
| topic | cooling rate boundary Σ3 grain boundary variant refractory properties |
| url | https://doi.org/10.1088/2053-1591/ace29b |
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