Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/57379
Título : Microstructural characterization of rapidly solidified ultrahigh boron tool steels
Autor : Jiménez, José Antonio, Adeva, Paloma, Frommeyer, G., Ruano, Oscar Antonio
Palabras clave : Tool steel
Rapid solidification
Hot isostatic pressing
Powder metallurgy
Fecha de publicación : 1995
Editor: Verlag C.H. Beck
Resumen: Argon atomized powders of two modified boron-containing-tool steels in the rapid solidification condition as well as the consolidated materials after hot isostatic pressing at different temperatures were investigated. The microstructure of the powders of both tool steels consists of primary dendrites of solidification and a network of the M23(B,C)6 borocarbide forming a continuous phase. The metastable M3B boride is present because of the high solidification rates involved in the atomization process. This microstructure is gradually lost when the temperature of consolidation by hot isostatic pressing is increased. A fine and uniform microstructure is developed after consolidation at 1100 °C. An increase of hardness with an increase of consolidation temperature is observed which is associated to the presence of martensite since both alloys have a composition characteristic of air-hardening steels. After two consecutive tempering treatments at 650°C for 2h the martensite is decomposed and a decrease of hardness with increasing consolidation temperature is observed.
Versión del editor: http://cat.inist.fr/?aModele=afficheN&cpsidt=2902691
URI : http://hdl.handle.net/10261/57379
ISSN: 0044-3093
Citación : Zeitschrift fuer Metallkunde 86(10) : 693-699 (1995)
Referencias: Cote INIST : 271, 35400005894036.0060
Aparece en las colecciones: (CENIM) Artículos

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