Impact of a heat treatment on the microstructure and the low cycle fatigue properties of a 9Ni steel
| Autor: | Jeremie Bouquerel, Jean-Bernard Vogt, Mahira A. Cota Araujo |
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| 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), Tanger, Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Lille, CNRS, INRA, ENSCL, Unité Matériaux et Transformations - UMR 8207 [UMET], Unité Matériaux et Transformations (UMET) - UMR 8207 |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | 30th Anniversary International Conference on Metallurgy and Materials 30th Anniversary International Conference on Metallurgy and Materials, Tanger, May 2021, Prague, Czech Republic. ⟨10.37904/metal.2021.4130⟩ |
| DOI: | 10.37904/metal.2021.4130⟩ |
| Popis: | International audience; The objective of the present paper is to investigate if the presence and the nature of austenite in 9Ni steel, together with the modification of the matrix induced by heat treatment, change the low cycle fatigue response. The steel was therefore heat-treated so that either a quenched martensitic matrix or a mixture of tempered martensitic with bainitic matrix containing retained or reversed austenite would be obtained, respectively. The experiments showed that while higher stress levels were observed during low cycle fatigue, the quenched microstructure presented a lower fatigue performance under the same applied strain. According to the slip marks pattern, the tempered steel exhibited a higher degree of cyclic deformation accommodation. No obvious effect of austenite in terms of the TRIP effect has been evidenced and the matrix appeared to play a more important role in the fatigue performance. This investigation suggests another possible role of austenite. |
| Databáze: | OpenAIRE |
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