Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking
The results of experimental research on forecasting post-fire resistance to brittle failure of selected steel grades used in construction are presented and discussed in this paper. The conclusions are based on detailed analysis of fracture surfaces obtained in instrumented Charpy tests. It has been...
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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/8/3281 |
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| author | Mariusz Maslak Michal Pazdanowski Marek Stankiewicz Anna Wassilkowska Paulina Zajdel Michal Zielina |
| author_facet | Mariusz Maslak Michal Pazdanowski Marek Stankiewicz Anna Wassilkowska Paulina Zajdel Michal Zielina |
| author_sort | Mariusz Maslak |
| collection | DOAJ |
| description | The results of experimental research on forecasting post-fire resistance to brittle failure of selected steel grades used in construction are presented and discussed in this paper. The conclusions are based on detailed analysis of fracture surfaces obtained in instrumented Charpy tests. It has been shown that the relationships formulated based on these tests agree well with conclusions drawn based on precise analysis of appropriate <i>F–s</i> curves. Furthermore, other relationships between lateral expansion <i>LE</i> and energy <i>W<sub>t</sub></i> required to break the sample constitute an additional verification in both qualitative and quantitative terms. These relationships are accompanied here by values of the <i>SFA<sub>(n)</sub></i> parameter, which are different, depending on the character of the fracture. Steel grades differing in microstructure have been selected for the detailed analysis, including: <i>S355J2+N</i>—representative for materials of ferritic-pearlitic structure, and also stainless steels such as <i>X20Cr13</i>—of martensitic structure, <i>X6CrNiTi18-10</i>—of austenitic structure and <i>X2CrNiMoN22-5-3</i> duplex steel—of austenitic-ferritic structure. |
| first_indexed | 2024-03-11T04:48:08Z |
| format | Article |
| id | doaj.art-f0e37fe49ede48b8b3da5aa2147476a2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:48:08Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f0e37fe49ede48b8b3da5aa2147476a22023-11-17T20:15:56ZengMDPI AGMaterials1996-19442023-04-01168328110.3390/ma16083281Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle CrackingMariusz Maslak0Michal Pazdanowski1Marek Stankiewicz2Anna Wassilkowska3Paulina Zajdel4Michal Zielina5Chair of Bridge, Metal and Timber Structures, Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, PolandChair for Computational Engineering, Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, PolandChair of Bridge, Metal and Timber Structures, Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, PolandDepartment of Water Supply, Sewerage and Environmental Monitoring, Faculty of Environmental Engineering and Energy, Cracow University of Technology, 31-155 Cracow, PolandChair of Bridge, Metal and Timber Structures, Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, PolandDepartment of Water Supply, Sewerage and Environmental Monitoring, Faculty of Environmental Engineering and Energy, Cracow University of Technology, 31-155 Cracow, PolandThe results of experimental research on forecasting post-fire resistance to brittle failure of selected steel grades used in construction are presented and discussed in this paper. The conclusions are based on detailed analysis of fracture surfaces obtained in instrumented Charpy tests. It has been shown that the relationships formulated based on these tests agree well with conclusions drawn based on precise analysis of appropriate <i>F–s</i> curves. Furthermore, other relationships between lateral expansion <i>LE</i> and energy <i>W<sub>t</sub></i> required to break the sample constitute an additional verification in both qualitative and quantitative terms. These relationships are accompanied here by values of the <i>SFA<sub>(n)</sub></i> parameter, which are different, depending on the character of the fracture. Steel grades differing in microstructure have been selected for the detailed analysis, including: <i>S355J2+N</i>—representative for materials of ferritic-pearlitic structure, and also stainless steels such as <i>X20Cr13</i>—of martensitic structure, <i>X6CrNiTi18-10</i>—of austenitic structure and <i>X2CrNiMoN22-5-3</i> duplex steel—of austenitic-ferritic structure.https://www.mdpi.com/1996-1944/16/8/3281steel microstructurepost-fire propertiesfracture surfacebrittle crackingimpact testshear fracture appearance |
| spellingShingle | Mariusz Maslak Michal Pazdanowski Marek Stankiewicz Anna Wassilkowska Paulina Zajdel Michal Zielina Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking Materials steel microstructure post-fire properties fracture surface brittle cracking impact test shear fracture appearance |
| title | Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking |
| title_full | Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking |
| title_fullStr | Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking |
| title_full_unstemmed | Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking |
| title_short | Impact Fracture Surfaces as the Indicators of Structural Steel Post-Fire Susceptibility to Brittle Cracking |
| title_sort | impact fracture surfaces as the indicators of structural steel post fire susceptibility to brittle cracking |
| topic | steel microstructure post-fire properties fracture surface brittle cracking impact test shear fracture appearance |
| url | https://www.mdpi.com/1996-1944/16/8/3281 |
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