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Kinetika šíření únavových trhlin v ocelích P91 a P92

Authors: Kander, Jan;

Kinetika šíření únavových trhlin v ocelích P91 a P92

Abstract

The main subject of this master’s thesis was to evalute inluence of loading cycle asymmetry and long-term thermal exposure on fatigue crack growth rate in martensitic P91 and P92 steels. Experiments were carried out in Material and metallurgical research Ostrava Ltd. and their main aim was to study the influences of different loading cycle asymmetries (R = 0,1 and R = 0,6) as well as 5000 hours/600 °C (P91) respectively 5000 hours/650 °C (P92) of thermal exposure on fatigue crack growth rate.

Předmětem této práce bylo posouzení vlivu asymetrie cyklu a dlouhodobé tepelné expozice na rychlost šíření únavové trhliny v martenzitických ocelích P91 a P92. V rámci experimentů byl porovnáván vliv asymetrie cyklu R = 0,1 a R = 0,6 a zároveň vliv tepelné expozice po dobu 5000 hodin a 600 °C (P91) resp. 650 °C (P92) na rychlost šíření únavových trhlin ve studovaných materiálech. Experimentální část této práce byla provedena ve společnosti Materiálový a metalurgický výzkum s.r.o v Ostravě.

A

Country
Czech Republic
Related Organizations
Keywords

P92, dlouhodobá tepelná expozice, asymetrie zátěžného cyklu, long-term thermal exposure, fatigue crack growth rate, P91, loading cycle asymmetry, rychlost šíření únavové trhliny

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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