Post-fire susceptibility to brittle fracture of selected steel grades used in construction industry – assessment based on the instrumented impact test
Authors:
- Mariusz Maslak,
- Michal Pazdanowski,
- Marek Stankiewicz,
- Paulina Zajdel
Abstract
The change in the value of the breaking energy is discussed here for selected steel grades used in building structures after subjecting the samples made of them to episodes of heating in the steady-state heating regime and then cooling in simulated fire conditions. These changes were recorded based on the instrumented Charpy impact tests, in relation to the material initial state. The S355J2+N, 1H18N9T steels and also X2CrNiMoN22-5-3 duplex steel were selected for detailed analysis. The fire conditions were modelled experimentally by heating the samples and then keeping them for a specified time at a constant temperature of: 600 ◦C (first series) and 800 ◦C (second series), respectively. Two alternative cooling variants were investigated in the experiment: slow cooling of the samples in the furnace, simulating the natural fire progress, without any external extinguishing action and cooling in water mist simulating an extinguishing action by a fire brigade. The temperature of the tested samples was set at the level of −20 ◦C and alternatively at the level of +20 ◦C. The conducted analysis is aimed at assessing the risk of sudden, catastrophic fracture of load-bearing structure made of steel degraded as a result of a fire that occurred previously with different development scenarios.
- Record ID
- CUT3159726450a64d9ea7d286b947ff9187
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 14
- Pages
- [1-22]
- Article number
- 3922
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 21-22; Bibliografia (liczba pozycji) - 31; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 14
- Keywords in English
- fire, structural steel, steady-state heating regime, impact test, breaking energy, post-fire steels, brittle fracture, instrumented impact Charpy test
- DOI
- DOI:10.3390/ma14143922 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/14/14/3922 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Publication indicators
- Citation count
- 7
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT3159726450a64d9ea7d286b947ff9187/
- URN
urn:pkr-prod:CUT3159726450a64d9ea7d286b947ff9187
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.