Artículo
The role of microstructure in fatigue crack initiation of 9-12%Cr reduced activation ferritic-martensitic steel
Fecha de publicación:
11/2015
Editorial:
Elsevier
Revista:
International Journal of Fatigue
ISSN:
0142-1123
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Electron back-scattered diffraction together with scanning and transmission electron microscopy were used to study nucleation of microstructural fatigue cracks in reduced-activation ferritic-martensitic steel, EUROFER 97. Cylindrical specimens were cycled over different plastic-strain ranges in order to evaluate the evolution of the dislocation structure. Surface-damage evolution was studied in smooth notched specimens by an optical in situ system equipped with a high-resolution camera. In order to understand the crack-initiation mechanism, the dislocation microstructure that develops in the near-surface regions of the notch was compared with that of the bulk. The results demonstrate a strong influence of lath-martensite boundaries on fatigue-crack nucleation.
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Colecciones
Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Batista, Maria Natalia; Marinelli, María Cecilia; Hereñu, Silvina Andrea Noemi; Alvarez, Iris; The role of microstructure in fatigue crack initiation of 9-12%Cr reduced activation ferritic-martensitic steel; Elsevier; International Journal of Fatigue; 72; 11-2015; 75-79
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