Relation between pitting potential, degree of sensitization, and reversed austenite in a supermartensitic stainless steel
N/D
Tipo de produção
Artigo
Data de publicação
2017
Texto completo (DOI)
Periódico
Corrosion
Editor
Texto completo na Scopus
Citações na Scopus
14
Autores
Calderon-Hernandez J.W.
Hincapie-Ladino D.
Filho E.B.M.
Magnabosco R.
Alonso-Falleiros N.
Orientadores
Resumo
© 2017, NACE InternationalPitting potential (Ep) and degree of sensitization (DOS) of a supermartensitic stainless steel (SMSS) were determined on specimens heat-treated at different tempering temperatures (550°C, 575°C, 600°C, 625°C, 650°C, or 700°C). The effect of pH (pH 6 and pH 8) on the Ep obtained in a 3.5 wt% NaCl solution, as well as the correlation between Ep and DOS obtained in 0.5 M H2SO4 + 0.01 M KSCN solution, was studied. The results showed correlation between Ep and DOS values, the samples with the higher DOS values being the ones with the lower Ep. A mechanism was proposed that would explain the correlation of the presence of reversed austenite formed during tempering, Ep, and DOS.
Citação
CALDERÓN-HERNÁNDEZ, JOSÉ; HINCAPÍE-LADINO, DUBERNEY; BENEDITO MARTINS FILHO, EDSON; Magnabosco, Rodrigo; FALLEIROS, NEUSA. Relation between pitting potential, degree of sensitization and reversed austenite in a supermartensitic stainless steel. CORROSION, v. 73, p. 953-960, 2017.
Palavras-chave
Keywords
Austenite; Martensite; PH changes and effects; Pitting potential; Sensitization; Supermartensitic stainless steel
Assuntos Scopus
3.5 wt% NaCl solution; Degree of sensitization; Degree of sensitizations (dos); pH change; Pitting potential; Sensitization; Supermartensitic stainless steels; Tempering temperature