Experimental characterization of high temperature fatigue crack growth in a single crystal superalloy for gas turbine applications

Fedelich, B; Affeldt, E; Harders, H; Marchal, N; Muller, F; Onofrio, G; Remy, L; Toulios, M

dc.contributor.author	Fedelich, B	en
dc.contributor.author	Affeldt, E	en
dc.contributor.author	Harders, H	en
dc.contributor.author	Marchal, N	en
dc.contributor.author	Muller, F	en
dc.contributor.author	Onofrio, G	en
dc.contributor.author	Remy, L	en
dc.contributor.author	Toulios, M	en
dc.date.accessioned	2014-03-01T02:51:40Z
dc.date.available	2014-03-01T02:51:40Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35596
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84866121638&partnerID=40&md5=b1a00d38eae79fbe1c02731d998b50eb	en
dc.subject	Crack Growth	en
dc.subject	Creep-Fatigue	en
dc.subject	LCF	en
dc.subject	Oxidation	en
dc.subject	Single Crystal Superalloy	en
dc.title	Experimental characterization of high temperature fatigue crack growth in a single crystal superalloy for gas turbine applications	en
heal.type	conferenceItem	en
heal.publicationDate	2008	en
heal.abstract	Crack growth tests under Low Cycle Fatigue (LCF) loading have been performed at 950°C with a single crystal superalloy used in gas turbines. The tests have been performed with various specimen shapes and orientations. Also the influence of hold time has been investigated. Some tests have been repeated in vacuum. The results are presented on the basis of the stress intensity factors K and of the C * creep fracture parameter. A beneficial influence of oxidation due to enhanced crack closure could be demonstrated for the low crack growth rates. The tests without hold time are consistent with the small scale yielding hypothesis and the crack growth data can be well described with the K factors. On the other hand, the use of the C * parameter can be shown to rationalize fairly well the crack propagation rates for tests with hold time and for a large range of conditions.	en
heal.journalName	17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures	en
dc.identifier.volume	2	en
dc.identifier.spage	1336	en
dc.identifier.epage	1343	en