About: SENSITIZATION TO CORROSION AS INITIATOR OF FATIGUE FRACTURE IN COMPRESSOR BLADES

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://transactions.fs.vsb.cz/2011-1/1836_Cihal.pdf
Description	Certain failures of stainless steels interpreted purely in terms of fracture mechanisms may in fact be closely associated with previous damage caused by localized corrosion. The closeness of the link between fatigue and corrosion is documented by the case history of compressor blades made of grade 14Cr17Ni2 (X14CrNi17-2) stainless steel. Fatigue fracturing observed in areas near the blade root tended to follow intergranular pathways, indicating that some additional mechanism other than fatigue might be involved. This suspicion was confirmed by electrochemical potentiokinetic reactivation (EPR) measurements in situ, which revealed sensitization to intergranular corrosion. It has been found that at the transition between the blade root and the blade proper the surfaces had been ground and polished too vigorously, heating the subcutaneous layers to within the danger zone of 400-600°C. Preferential integranular attack in these locations was the initiation mechanism that provoked a subsequent failure of the blades by fatigue fracture. Certain failures of stainless steels interpreted purely in terms of fracture mechanisms may in fact be closely associated with previous damage caused by localized corrosion. The closeness of the link between fatigue and corrosion is documented by the case history of compressor blades made of grade 14Cr17Ni2 (X14CrNi17-2) stainless steel. Fatigue fracturing observed in areas near the blade root tended to follow intergranular pathways, indicating that some additional mechanism other than fatigue might be involved. This suspicion was confirmed by electrochemical potentiokinetic reactivation (EPR) measurements in situ, which revealed sensitization to intergranular corrosion. It has been found that at the transition between the blade root and the blade proper the surfaces had been ground and polished too vigorously, heating the subcutaneous layers to within the danger zone of 400-600°C. Preferential integranular attack in these locations was the initiation mechanism that provoked a subsequent failure of the blades by fatigue fracture. (en)
Title	SENSITIZATION TO CORROSION AS INITIATOR OF FATIGUE FRACTURE IN COMPRESSOR BLADES SENSITIZATION TO CORROSION AS INITIATOR OF FATIGUE FRACTURE IN COMPRESSOR BLADES (en)
skos:prefLabel	SENSITIZATION TO CORROSION AS INITIATOR OF FATIGUE FRACTURE IN COMPRESSOR BLADES SENSITIZATION TO CORROSION AS INITIATOR OF FATIGUE FRACTURE IN COMPRESSOR BLADES (en)
skos:notation	RIV/25794787:_____/11:#0000433!RIV12-MSM-25794787
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/08/1789), Z(MSM2579478701)
http://linked.open...iv/cisloPeriodika	LVII
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Číhal, Vladimír Kalabisová, Eva Turek, Libor
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	SVÚOM s.r.o.
http://linked.open...dnocenehoVysledku	228851
http://linked.open...ai/riv/idVysledku	RIV/25794787:_____/11:#0000433
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sensitization to corrosion; fatigue fracture; compressor blades; danger zone; 14Cr17Ni2; 400-600°C (en)
http://linked.open.../riv/klicoveSlovo	14Cr17Ni2 400-600°C compressor blades danger zone fatigue fracture sensitization to corrosion
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[2C2ABD2CBE9B]
http://linked.open...i/riv/nazevZdroje	Transactions of the VŠB - Technical University of Ostrava, Mechanical Series
http://linked.open...in/vavai/riv/obor	JK
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Degradation mechanism of cold worked stainless steels in aggressive environments
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	1, 2011
http://linked.open...iv/tvurceVysledku	Kalabisová, Eva Číhal, Vladimír Krhutová, Z. Lasek, S. Blahetová, M. Míka, J. Turek, Libor
http://linked.open...n/vavai/riv/zamer	Research of methods for precision of metallic materials and their protective layers service life prediction from point of view pollution in environment
issn	1210-0471
number of pages	8 (xsd:int)

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