Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/78593
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Austenite grain coarsening under the influence of niobium carbonitrides |
Autor: | San-Martín, David CSIC ORCID ; García Caballero, Francisca CSIC ORCID ; Capdevila, Carlos CSIC ORCID ; García de Andrés, Carlos | Fecha de publicación: | 2004 | Editor: | Japan Institute of Metals | Citación: | MATERIALS TRANSACTIONS 45: 2797-2804 (2004) | Resumen: | This work investigates grain growth behaviour under the influence of pinning carbonitrides in a niobium microalloyed steel. The effect of temperature and heating rate on the grain size is studied. The grain coarsening temperature is determined as a function of the heating rate. It is found that unpinning by precipitates occurs around 40--70 K below the temperature of complete dissolution of carbonitrides. It has been found that experimental results are best described assuming a random distribution of carbonitrides in the matrix and niobium volume diffusion as the rate controlling process for the coarsening of precipitates. Austenite grain growth is explained theoretically taking as a basis the model proposed by Zener, which has been adapted for non-equilibrium kinetics, taking into account the experimental evidence that during a continuous heating, the amount of microalloyed element in solid solution is altered and different from that predicted by the solubility product. | URI: | http://hdl.handle.net/10261/78593 | Identificadores: | issn: 1345-9678 http://www.jim.or.jp/journal/e/pdf3/45/09/2797.pdf |
Aparece en las colecciones: | (CENIM) Artículos |
Mostrar el registro completo
CORE Recommender
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.