Abstract
The consequences of aging at 400 and 475 degrees 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 degrees C. The localized corrosion
susceptibility increased, while the impact toughness decreased with
aging time. These two effects were also more important at 475 degrees C.
Unlike duplex SSs, AISI 444 did not present any variation in coercive
force or Curie temperature with aging time. The effects on the Mossbauer
spectra were also determined and analyzed.
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