Image analysis of microscopic crack patterns applied to thermal fatigue heat-checking of high temperature tool steels
Autor: | Gilles Dour, Farid Medjedoub, Sabine Le Roux, Farhad Rezai-Aria |
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Přispěvatelé: | Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO) |
Rok vydání: | 2013 |
Předmět: |
Materials science
Scale (ratio) Scanning electron microscope Oxide General Physics and Astronomy 02 engineering and technology engineering.material 01 natural sciences Microscopic scale Image analysis Thermal fatigue chemistry.chemical_compound Structural Biology Oxidation [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] 0103 physical sciences General Materials Science 010302 applied physics Hot work tool steel Metallurgy Hot work Cell Biology 021001 nanoscience & nanotechnology Crack pattern Cracking chemistry Tool steel engineering 0210 nano-technology Scanning electron microscopy Layer (electronics) |
Zdroj: | Micron Micron, 2013, 44, pp.347-358. ⟨10.1016/j.micron.2012.08.007⟩ Micron, Elsevier, 2013, 44, pp.347-358. ⟨10.1016/j.micron.2012.08.007⟩ |
ISSN: | 0968-4328 |
DOI: | 10.1016/j.micron.2012.08.007 |
Popis: | International audience; Surface cracking or heat-checking is investigated at a microscopic scale on a hot work tool steel (X38CrMoV5) tested under thermal fatigue. Thermal fatigue tests are periodically interrupted to observe the surface of the specimens by scanning electron microscopy (SEM). A non destructive and semiautomatic method is developed to assess and evaluate the two-dimensional crack pattern initiated on the oxide scale layer formed on the specimen surface. The crack pattern is characterized by image analysis in terms of density, morphological and topological features. This technique allows to determine the number of cycles to initiate the microscopic heat-checking and to follow its evolution. |
Databáze: | OpenAIRE |
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