Effect of microstructure on corrosion behavior of dual-phase steels

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Salamci E., Candan S., Kabakci F.

KOVOVE MATERIALY-METALLIC MATERIALS, cilt.55, sa.2, ss.133-139, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.4149/km_2017_2_133
  • Dergi Adı: KOVOVE MATERIALY-METALLIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.133-139
  • Anahtar Kelimeler: dual-phase steel, epitaxial ferrite, martensite, corrosion, EPITAXIAL FERRITE, TENSILE PROPERTIES, NACL SOLUTION, SUSCEPTIBILITY
  • Gazi Üniversitesi Adresli: Evet

Özet

Dual phase (DP) steels with different volume fractions of martensite and epitaxial ferrite were produced in different intercritical annealing temperatures and cooling rates. Corrosion behaviors of four different DP steels were investigated in 3.5 % NaCl solution by using potentiodynamic polarization and immersion tests. The results showed that both amounts of martensite and epitaxial ferrite have an influence on the corrosion behavior of DP steels. It was observed that corrosion resistance increased considerably with the presence of epitaxial ferrite as compared to dual phase steel containing non-epitaxial ferrite. On the other hand, the corrosion resistance of DP steels decreased with an increase in the martensite volume fraction (MVF).