Journal of Materials Science

, Volume 44, Issue 1, pp 293–299 | Cite as

Ageing effects on α′ precipitation and resistance to corrosion of a novel Cr–Mo stainless steel with high Mo content

  • Igor F. VasconcelosEmail author
  • Sérgio S. M. Tavares
  • F. Evaristo U. Reis
  • Hamilton F. G. Abreu


The consequences of ageing at 400 and 475 °C on α′ precipitation and corrosion resistance of a novel Cr–Mo ferritic SS with high Mo content were investigated. Combination of X-ray diffraction and Mössbauer spectroscopy results indicates the appearance of a small amount of a paramagnetic phase as a result of the ageing. This phase is iso-structural with the α phase and is thus associated with a Cr-rich α′ phase. The appearance of this phase is related to a decrease of the resistance to corrosion as studied by DL-EPR because the presence of this paramagnetic phase leads to discontinuities in the oxide layer thus reducing corrosion protection and exposing the steel to the action of the corrosive solution.


Stress Corrosion Crack Duplex Stainless Steel Distillation Tower Ferritic Stainless Steel Paramagnetic Phase 



The authors are grateful to the Brazilian research agencies Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico (FUNCAP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); and Agência Nacional de Petróleo (ANP) for financial support, and to Prof. Pedro de Lima Neto for DL-EPR measurements.


  1. 1.
    Zetlmeisl MJ (1996) Corrosion’96, paper no. 218Google Scholar
  2. 2.
    Wu XQ, Jing HM, Zheng YG, Yao ZM, Ke W (2004) Corros Sci 46:1013CrossRefGoogle Scholar
  3. 3.
    Souza JA, Abreu HFG, Nascimento AM, de Paiva JAC, de Lima-Neto P, Tavares SSM (2005) J Mater Eng Perform 14:367CrossRefGoogle Scholar
  4. 4.
    Kuzucu V, Aksoy M, Korkut MH, Yildirim MM (1997) Mater Sci Eng A 230:75CrossRefGoogle Scholar
  5. 5.
    Van Zwieten ACTM, Bulloch JH (1993) Int J Press Vessels Piping 56:1CrossRefGoogle Scholar
  6. 6.
    Grobner PJ (1973) Metall Trans 4:251CrossRefGoogle Scholar
  7. 7.
    Solomon HD, Levinson LM (1978) Acta Metall 28:429CrossRefGoogle Scholar
  8. 8.
    Sedricks AJ (1996) Corrosion of stainless steel, 2nd edn. Wiley-Interscience, New YorkGoogle Scholar
  9. 9.
    Lopez N, Cid M, Puigalli M, Azkarate I, Pelayo A (1997) Mater Sci Eng A 229:123CrossRefGoogle Scholar
  10. 10.
    Park CJ, Kwon HS (2002) Corros Sci 44:2817CrossRefGoogle Scholar
  11. 11.
    Tavares SSM, Terra VF, de Lima-Neto P, Matos DE (2005) J Mater Sci 40:4025. doi: CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Igor F. Vasconcelos
    • 1
    Email author
  • Sérgio S. M. Tavares
    • 2
  • F. Evaristo U. Reis
    • 1
  • Hamilton F. G. Abreu
    • 1
  1. 1.Dep. Eng. Metalúrgica e de MateriaisUniversidade Federal do CearáFortalezaBrazil
  2. 2.Dep. Eng. MecânicaUniversidade Federal FluminenseNiteroiBrazil

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