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Titel: Microstructure-Based Lifetime Assessment of Austenitic Steel AISI 347 in View of Fatigue, Environmental Conditions and NDT
VerfasserIn: Acosta, Ruth
Heckmann, Klaus
Sievers, Jürgen
Schopf, Tim
Bill, Tobias
Starke, Peter
Donnerbauer, Kai
Lücker, Lukas
Walther, Frank
Boller, Christian
Sprache: Englisch
Titel: Applied Sciences
Bandnummer: 11
Heft: 23
Verlag/Plattform: MDPI
Erscheinungsjahr: 2021
Freie Schlagwörter: nuclear engineering
microstructure analysis
damage
fatigue
corrosion
non-destructive testing
fatigue life evaluation
structural mechanics
numerical modeling
AISI 347
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: The assessment of metallic materials used in power plants’ piping represents a big challenge due to the thermal transients and the environmental conditions to which they are exposed. At present, a lack of information related to degradation mechanisms in structures and materials is covered by safety factors in its design, and in some cases, the replacement of components is prescribed after a determined period of time without knowledge of the true degree of degradation. In the collaborative project “Microstructure-based assessment of maximum service life of nuclear materials and components exposed to corrosion and fatigue (MibaLeb)”, a methodology for the assessment of materials’ degradation is being developed, which combines the use of NDT techniques for materials characterization, an optimized fatigue lifetime analysis using short time evaluation procedures (STEPs) and numerical simulations. In this investigation, the AISI 347 (X6CrNiNb18-10) is being analyzed at different conditions in order to validate the methodology. Besides microstructural analysis, tensile and fatigue tests, all to characterize the material, a pressurized hot water pipe exposed to a series of flow conditions will be evaluated in terms of full-scale testing as well as prognostic evaluation, where the latter will be based on the materials’ data generated, which should prognose changes in the material’s condition, specifically in a pre-cracked stage. This paper provides an overview of the program, while the more material’s related aspects are presented in the subsequent paper.
DOI der Erstveröffentlichung: 10.3390/app112311214
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-351030
hdl:20.500.11880/32136
http://dx.doi.org/10.22028/D291-35103
ISSN: 2076-3417
Datum des Eintrags: 6-Jan-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Prof. Dr. Christian Boller
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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