Behaviour of short and long cracks in air and in liquid metal in T91 steel
| Autor: | Ingrid Proriol Serre, Jeremie Bouquerel, Jean-Bernard Vogt, Carla Carlé |
|---|---|
| Přispěvatelé: | Unité Matériaux et Transformations - UMR 8207 (UMET), Institut de Chimie du CNRS (INC)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL), European Project: 604862,EC:FP7:Fission,FP7-Fission-2013,MATISSE(2013), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Vogt, Jean-Bernard, Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut National de la Recherche Agronomique (INRA), Université de Lille, ENSCL, INRA, CNRS, Unité Matériaux et Transformations - UMR 8207 [UMET] |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
cycle fatigue behavior
Liquid metal Materials science 0211 other engineering and technologies Cleavage (crystal) 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry Fatigue resistance 020303 mechanical engineering & transports 0203 mechanical engineering lcsh:TA1-2040 Martensite 021105 building & construction [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Low-cycle fatigue Cyclic softening Composite material lcsh:Engineering (General). Civil engineering (General) Electron backscatter diffraction Eutectic system |
| Zdroj: | FATIGUE 2018 FATIGUE 2018, May 2018, Poitiers, France. pp.5, ⟨10.1051/matecconf/201816503016⟩ (165)2018; 12th International Fatigue Congress (FATIGUE), Poitiers, FRA, 2018-05-27-2018-06-01 FATIGUE 2018, May 2018, Poitiers, France. ⟨10.1051/matecconf/201816503016⟩ MATEC Web of Conferences, Vol 165, p 03016 (2018) |
| DOI: | 10.1051/matecconf/201816503016⟩ |
| Popis: | The low cycle fatigue behaviour of a 9Cr1MoNbV martensitic steel has been investigated at 350°C in air and in lead-bismuth eutectic (LBE). Total strain controlled tests were performed from Δεt = 0.40% to 1.2%. The material exhibited a pronounced cyclic softening in both environments. LBE reduced the fatigue resistance. LBE accelerated the formation of the long crack by promoting the growth of the first short cracks. A clear change in propagation mode was observed. In air, ductile fatigue striations were observed while in LBE a brittle fracture decorated by voluminous and largely spaced striations were visible. From EBSD analysis, it was concluded that in LBE, the long crack advanced quickly by repeated and discontinuous cleavage. |
| Databáze: | OpenAIRE |
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