English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/89249
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

The effect of silicon on the nanoprecipitation of cementite

AutorKim, B.; Celada, Carola de; San-Martín, D; Sourmail, Thomas; Rivera-Díaz del Castillo, P.E.J
Palabras clavePhase transformation
Synchrotron radiation
Carbides
Precipitation kinetics
Tempered martensite
Fecha de publicación2013
EditorElsevier
CitaciónActa Materialia 61 (18) : 6983-6992 (2013)
ResumenThe current work presents a comprehensive study that aims at understanding the role of silicon on θ precipitation, as well as on the ε → θ carbide transition in tempered martensite. Cementite nucleation was modelled under paraequilibrium conditions in order to ensure the presence of silicon in the carbide, where both thermodynamic and misfit strain energies were calculated to evaluate the overall free energy change. The growth stage was investigated using in situ synchrotron radiation; three alloys containing 1.4–2.3 wt.% silicon contents have been studied. Silicon appears to play a significant role in carbide growth. It was observed throughout tempering that cementite precipitation was slower in the higher silicon content alloy. Literature reports that cementite growth is accompanied by silicon partitioning, where the silicon content inside the carbide decreases as tempering progresses. Therefore it appears that the limiting factor of the growth kinetics is the rate at which silicon is rejected from the carbide; the silicon piles up at the carbide–matrix interface, acting as a barrier for further growth
Versión del editorhttp://dx.doi.org/10.1016/j.actamat.2013.08.012
URIhttp://hdl.handle.net/10261/89249
DOI10.1016/j.actamat.2013.08.012
ISSN1359-6454
Aparece en las colecciones: (CENIM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
206_2013_Bij-Na-Kim_ActaMater.pdf1,74 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.