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

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

Description

Title: Influence of aluminium on dimensional change of sintered 430 Ferritic Stainless Steel
Author/s:
  • García Cambronero, Luis Enrique
  • Marugán Merinero, Juan
  • Ruiz Román, Jose Manuel
  • Ruiz Prieto, Jose Manuel
  • Suárez Bermejo, Juan Carlos
Item Type: Presentation at Congress or Conference (Article)
Event Title: EURO PM 2011
Event Dates: 09/10/2011 - 12/10/2011
Event Location: Barcelona, España
Title of Book: Proceedings of EURO PM 2011
Date: 2011
Volume: 1
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería de Materiales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 13147
DC Identifier: http://oa.upm.es/13147/
OAI Identifier: oai:oa.upm.es:13147
Deposited by: Memoria Investigacion
Deposited on: 06 Nov 2012 08:54
Last Modified: 21 Apr 2016 12:27
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