Influence of aluminium on dimensional change of sintered 430 Ferritic Stainless Steel

García Cambronero, Luis Enrique; Marugán Merinero, Juan; Ruiz Román, Jose Manuel; Ruiz Prieto, Jose Manuel y Suárez Bermejo, Juan Carlos (2011). Influence of aluminium on dimensional change of sintered 430 Ferritic Stainless Steel. En: "EURO PM 2011", 09/10/2011 - 12/10/2011, Barcelona, España. pp. 127-132.

Descripción

Título: Influence of aluminium on dimensional change of sintered 430 Ferritic Stainless Steel
Autor/es:
  • García Cambronero, Luis Enrique
  • Marugán Merinero, Juan
  • Ruiz Román, Jose Manuel
  • Ruiz Prieto, Jose Manuel
  • Suárez Bermejo, Juan Carlos
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: EURO PM 2011
Fechas del Evento: 09/10/2011 - 12/10/2011
Lugar del Evento: Barcelona, España
Título del Libro: Proceedings of EURO PM 2011
Fecha: 2011
Volumen: 1
Materias:
Escuela: E.T.S.I. Minas (UPM) [antigua denominación]
Departamento: Ingeniería de Materiales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Aluminium is added to decrease matrix chromium losses on 430 stainless steel sintered on nitrogen atmosphere. Three different ways were used to add a 3% (in weight) aluminium: as elemental powder, as prealloyed powder, and as intermetallic Fe-AI compound. After die pressing at densities between 6.1-6.5 g/cm3, samples were sintered on vacuum and on N2-5%H2 atmosphere in a dilatometric furnace. Therefore, dimensional change was recorded during sintering. Weight gain was obtained after nitrogen sintering on all materials due to nitrides formation. Sample expansion was obtained on all nitrogen sintered steels with Al additions. Microstructure showed a dispersion of aluminium nitrides when pre-alloyed powders are used. On the contrary, aluminium nitride areas can be found when aluminium is added as elemental powders or as Fe-AI intermetallics. Also nitrogen atmosphere leads to austenite formation and hence, on cooling, dilatometric results showed a dimensional change at austenitic-ferritic phase transformation temperature.

Más información

ID de Registro: 13147
Identificador DC: http://oa.upm.es/13147/
Identificador OAI: oai:oa.upm.es:13147
Depositado por: Memoria Investigacion
Depositado el: 06 Nov 2012 08:54
Ultima Modificación: 21 Abr 2016 12:27
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