TEMPERING EFFECT ON THE LOCALIZED CORROSION OF THE 13CR4NI0.02C AND 13CR1NI0.15C STEELS IN A SYNTHETIC MARINE ENVIRONMENT

Code: 210404299
Downloads
8
Views
22
Compartilhe
Título

TEMPERING EFFECT ON THE LOCALIZED CORROSION OF THE 13CR4NI0.02C AND 13CR1NI0.15C STEELS IN A SYNTHETIC MARINE ENVIRONMENT

Autores(as):
  • Neide Aparecida Mariano

  • Renato de Mendonça

DOI
  • DOI
  • 10.37885/210404299
    Publicado em

    31/05/2021

    Páginas

    298-307

    Capítulo

    21

    Resumo

    Primarily, tempering is used in martensitic stainless steels with low carbon in order to change their mechanical properties. However, it also modifies the corrosion properties; usually depending on the temperature and duration of the heat treatment. This work investigated the impact of tempering on the corrosion of 13Cr4Ni0.02C and 13Cr1Ni0.15C (% weight) steels. Samples were tempered at 650º, 700º and 750ºC, characterized by optical microscopy and cyclic anodic polarization tests in a synthetic marine environment. The results showed differences in the microstructure of the 13Cr4Ni0.02C tempered samples, which changed from lath to lamellar with precipitates in the prior austenite grain boundaries. On the other hand, tempering did not affect the 13Cr1Ni0.15C microstructure. The anodic polarization tests showed that the pitting potential of the 13Cr4Ni0.02C samples decreased with the tempering temperature increasing. Similar values of pitting potential were found with the 13Cr1Ni0.15C tempered samples, which were lower than the 13Cr4Ni0.02C samples after tempering. It shows that even though the corrosion resistance of the 13Cr4Ni0.02C reduces when the tempering temperature was increased, it is better than that presented by 13Cr1Ni0.15C.

    Ler mais...
    Palavras-chave

    Corrosion, Marine environment, Martensite, Polarization tests.

    Licença

    Esta obra está licenciada com uma Licença Creative Commons Atribuição-NãoComercial-SemDerivações 4.0 Internacional.

    Licença Creative Commons

    O conteúdo dos capítulos e seus dados e sua forma, correção e confiabilidade, são de responsabilidade exclusiva do(s) autor(es). É permitido o download e compartilhamento desde que pela origem e no formato Acesso Livre (Open Access), com os créditos e citação atribuídos ao(s) respectivo(s) autor(es). Não é permitido: alteração de nenhuma forma, catalogação em plataformas de acesso restrito e utilização para fins comerciais. O(s) autor(es) mantêm os direitos autorais do texto.

    Este site utiliza cookies. Usamos cookies para personalizar conteúdo e anúncios, fornecer recursos de mídia social e analisar nosso tráfego. Ao continuar você concorda com a nossa política de utilização de cookies.

    Continuar