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Statements

Subject Item
n2:RIV%2F60193247%3A_____%2F11%3AUJP1453I%21RIV12-MPO-60193247
rdf:type
n13:Vysledek skos:Concept
rdfs:seeAlso
http://www.scientific.net/KEM.465.499
dcterms:description
This paper summarizes the achieved results of microstructure analysis and mechanical testing of long-term degradation of Mn-V steel (W. Nr. 1.1133, ČSN 41 3123) frequently used in small and middle boiler pressure systems operating under creep conditions. In these systems, non-exchangeable components often limit a safety of their service operation. Therefore in view of the monitoring, non-destructive methods like replica technique, hardness testing and defectoscopy, and probabilistic approach to residual life assessment seems to be the only way how to quantitatively determine a residual life of the boiler pressure system. Achieved results of as-exposed and as-secondary aged Mn-V steel confirmed that besides NDT controlling of sheet welds due to possible cracks, the replica technique (on available component surface) accompanied by hardness measurement on each segment of weldment should be sufficient for residual life assessment of thick-walled components of boiler pressure system operating under creep conditions. Additionally as a very rough estimate, a value of limit hardness of steel for safety operation is estimated at about 150 HV. This paper summarizes the achieved results of microstructure analysis and mechanical testing of long-term degradation of Mn-V steel (W. Nr. 1.1133, ČSN 41 3123) frequently used in small and middle boiler pressure systems operating under creep conditions. In these systems, non-exchangeable components often limit a safety of their service operation. Therefore in view of the monitoring, non-destructive methods like replica technique, hardness testing and defectoscopy, and probabilistic approach to residual life assessment seems to be the only way how to quantitatively determine a residual life of the boiler pressure system. Achieved results of as-exposed and as-secondary aged Mn-V steel confirmed that besides NDT controlling of sheet welds due to possible cracks, the replica technique (on available component surface) accompanied by hardness measurement on each segment of weldment should be sufficient for residual life assessment of thick-walled components of boiler pressure system operating under creep conditions. Additionally as a very rough estimate, a value of limit hardness of steel for safety operation is estimated at about 150 HV.
dcterms:title
Long-Term Thermal Degradation of Mn-V Steel (W.Nr. 1.1133) Long-Term Thermal Degradation of Mn-V Steel (W.Nr. 1.1133)
skos:prefLabel
Long-Term Thermal Degradation of Mn-V Steel (W.Nr. 1.1133) Long-Term Thermal Degradation of Mn-V Steel (W.Nr. 1.1133)
skos:notation
RIV/60193247:_____/11:UJP1453I!RIV12-MPO-60193247
n13:predkladatel
n14:ico%3A60193247
n3:aktivita
n12:I n12:S n12:P
n3:aktivity
I, P(FI-IM4/049), S
n3:cisloPeriodika
2011
n3:dodaniDat
n17:2012
n3:domaciTvurceVysledku
n4:4874358 n4:9475583 n4:3293823 n4:8727287 n4:9973249
n3:druhVysledku
n9:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
209954
n3:idVysledku
RIV/60193247:_____/11:UJP1453I
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Mn-V steel, microstructure, mechanical properties, thermal degradation
n3:klicoveSlovo
n7:thermal%20degradation n7:microstructure n7:Mn-V%20steel n7:mechanical%20properties
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[6088DC352B0F]
n3:nazevZdroje
Key Engineering Materials
n3:obor
n16:JG
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n8:FI-IM4%2F049
n3:rokUplatneniVysledku
n17:2011
n3:svazekPeriodika
465
n3:tvurceVysledku
Svobodová, Eva Shejbal, Jaromír Svobodová, Marie Douda, Jindřich Horváth, Ladislav
s:issn
1013-9826
s:numberOfPages
4
n20:doi
10.4028/www.scientific.net/KEM.465.499