Microstructure et auto-échauffement d’aciers ferritiques soumis à des sollicitations cycliques de faibles amplitudes de contraintes
| Autor: | Bastien Weber, Véronique Favier, Charles Mareau, A. Galtier, Marcel Berveiller |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
010302 applied physics
Matériaux [Sciences de l'ingénieur] Materials science Metallurgy Metals and Alloys 02 engineering and technology Dissipation 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Grain size 0103 physical sciences Volume fraction Materials Chemistry Dissipative system Cyclic loading Physical and Theoretical Chemistry 0210 nano-technology Self heating Dispersion (chemistry) |
| Zdroj: | Revue de Métallurgie. 107:3-8 |
| ISSN: | 1156-3141 0035-1563 |
| DOI: | 10.1051/metal/2010005 |
| Popis: | A new micromechanical modelling is proposed to correlate some microstructural parameters and dissipation in ferritic steels under cyclic loading. We assumed the occurrence of two dissipative mechanisms associated with anelastic and inelastic deformations, respectively. We showed that the modelling provides good qualitative prediction of the heating curves when changing the volume fraction of precipitates in ferritic steels. We highlighted the key role of the dispersion of the grain size on the local and global dissipation. |
| Databáze: | OpenAIRE |
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