Influence of the duration of fire incidents on the post-fire impact strength of selected steel grades used in construction
Authors:
- Mariusz Maslak,
- Michal Pazdanowski,
- Marek Stankiewicz,
- Paulina Zajdel
Abstract
The results of experimental research dealing with the influence the duration of exposure of selected steel grades to fire exerts on their post-fire brittleness are presented and substantively discussed. The detailed analysis pertains to steels of varied microstructure, in particular: S355J2+N steel – representative for conventional ferriticpearlitic structural steel grades, and a few stainless steel grades, such as: X6CrNiTi18-10 steel – characterized by austenitic structure, as well as X2CrNiMoN22-5-3 and X2CrMnNiN21-5-1 steels – both of mixed austenitic-ferritic structure, however, the first of these is of standard duplex type while the second one – of lean duplex type. The considered scenarios of simulated fire exposure have been selected so, as to follow the rules of steady state heating regime. The first series of experiments, associated with the "short” fire scenario, consisted of fast heating the samples to the assigned temperature and then keeping them in that temperature for one hour. In the second series of experiments, associated with the “long" fire scenario, the effective heating time has been extended to 10 hours. Two different levels of heating temperature have been applied, namely 600oC and 800oC. The cooling mode of the test samples has been varied as well. Slow cooling in the open air has been opposed to rapid cooling in water mist, simulating the results of extinguishing action conducted by fire brigade.
- Record ID
- CUTadc43c6632464fbaa5fb01269221c9e6
- Publication categories
- ; ;
- Author
- Pages
- 623-636
- Other elements of collation
- fot.; tab.; wykr.; Bibliografia (na s.) - 635-636; Bibliografia (liczba pozycji) - 33; Oznaczenie streszczenia - Abstr.
- Substantive notes
- Materiały konferencyjne dostępne także na USB
- Book
- Lopes Camargo Aline, Aline Lopes Camargo Gaio Graef Ângela, Ângela Gaio Graef Neves Costa Carla Carla Neves Costa (eds.): IFireSS 2023 : International Fire Safety Symposium, Rio de Janeiro - Brazil, June 21st to 23rd, 2023, 2023, Junho, Associação Luso-Brasileira para a Segurança Contra Incêndio (ALBRASCI), ISBN 978-65-00-82533-6
- Keywords in English
- fire exposure, fire duration, steel microstructure, impact strength, instrumented Charpy test
- Language
- eng (en) English
- Score (nominal)
- 5
- Score source
- publisherList
- Score
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTadc43c6632464fbaa5fb01269221c9e6/
- URN
urn:pkr-prod:CUTadc43c6632464fbaa5fb01269221c9e6
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