Effects of Low-Temperature Aging on AISI 444 Steel

Effects of Low-Temperature Aging on AISI 444 Steel

The consequences of aging at 400 and 475 °C on the mechanical properties, corrosion resistance, and magnetic properties of the ferritic stainless steel (SS) AISI 444 were investigated. Age hardening was measured as a function of aging time at both temperatures and was found to be more intense at 475...

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Veröffentlicht in:Journal of materials engineering and performance 2005-06, Vol.14 (3), p.367-372
Hauptverfasser: Souza, José A., Abreu, Hamilton F.G., Nascimento, Alex M., de Paiva, José A.C., de Lima-Neto, Pedro, Tavares, Sérgio S.M.
Format: Artikel
Sprache:eng
Schlagworte:
Age hardening
Curie temperature
Ferritic stainless steels
Localized corrosion
Magnetic permeability
Magnetic properties
Materials engineering
Mechanical properties
Spectra
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Zusammenfassung:The consequences of aging at 400 and 475 °C on the mechanical properties, corrosion resistance, and magnetic properties of the ferritic stainless steel (SS) AISI 444 were investigated. Age hardening was measured as a function of aging time at both temperatures and was found to be more intense at 475 °C. The localized corrosion susceptibility increased, while the impact toughness decreased with aging time. These two effects were also more important at 475 °C. Unlike duplex SSs, AISI 444 did not present any variation in coercive force or Curie temperature with aging time. The effects on the Mössbauer spectra were also determined and analyzed.[PUBLICATION ABSTRACT]
ISSN:1059-9495
1544-1024
DOI:10.1361/10599490524020