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Título: | Tensile behaviour of a nanocrystalline bainitic steel containing 3 wt% silicon |
Autor: | García Mateo, Carlos CSIC ORCID CVN ; García Caballero, Francisca CSIC ORCID ; Sourmail, Thomas; Kuntz, M.; Cornide, Juan CSIC; Suranio, V.; Elvira, R. | Palabras clave: | Bainite Nanostructures ferrite Mechanical properties TRIP |
Fecha de publicación: | 15-jul-2012 | Editor: | Elsevier | Citación: | Materials Science and Engineering: A 549 : 185-192 (2012) | Resumen: | Much recent work has been devoted to characterize the microstructure and mechanical properties bainitic nanostructured steels. The microstructure is developed by isothermal heat treatment at temperatures as low as 125–350 °C and adapted steel grades typically contain high carbon contents to achieve sufficient depletion of the BS–MS temperature range, and above 1.5 Si wt.% to suppress carbide formation during isothermal holding. On the latter, most of the published literature agrees on a limit of around 1.2–1.5 wt.% to suppress cementite in high carbon steels. For this reason perhaps, additions of Si significantly above this limit have not been investigated systematically in the context of nanostructured bainitic steels. The present work is concerned with the effect of up to ∼3 Si wt.% in a steel grade adapted to low temperature bainitizing. Tensile properties as compared to similar grades, though with lower Si contents, exhibited unrivalled combinations of strength and ductility, with above 21% total elongation for a UTS above 2 GPa. An attempt is made to explain the mechanical properties of this microstructure in terms of some of its most relevant and unique morphological and microstructural features | Versión del editor: | http://dx.doi.org/10.1016/j.msea.2012.04.031 | URI: | http://hdl.handle.net/10261/65984 | DOI: | 10.1016/j.msea.2012.04.031 | ISSN: | 0921-5093 |
Aparece en las colecciones: | (CENIM) Artículos |
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