Impact Toughness, Fatigue Crack Growth and Corrosion Behavior of Thermally Aged UNS S32205 Duplex Stainless Steel

  • Jastej SinghEmail author
  • A. S. Shahi
Technical Paper


The aim of the present work was to study the impact, fatigue crack growth and corrosion behavior of 2205 duplex stainless steel (DSS) when subjected to one of the most influential thermal aging condition that promotes deleterious secondary precipitation. Formation of Cr- and Mo-rich σ-phase was confirmed by EDX analysis which deteriorated impact toughness causing the material to fail following quasi-cleavage mode of fracture. Susceptibility of DSS 2205 to pitting corrosion assessed though Potentiodynamic polarization technique was enhanced by thermal aging, but sensitization performance evaluated via double-loop electrochemical potentiokinetic reactivation (DLEPR) technique did not show much degradation. However, fatigue crack growth behavior testing divulged drastic enhancement in impediment to crack propagation by the matrix after thermal aging.


Duplex stainless steel Impact toughness Thermal aging Fatigue crack growth Corrosion 



Authors gratefully acknowledge the infrastructural support provided by Welding Metallurgy Laboratory, Department of Mechanical Engineering, Sant Longowal Institute of Engineering & Technology, (Deemed to be University), Longowal, Sangrur-148106 (Punjab), India.


  1. 1.
    Gunn R N, Duplex Stainless Steel: Microstructure, Properties and Applications, Abington Publishing House, Cambridge, England (1997).CrossRefGoogle Scholar
  2. 2.
    Dhooge A, Weld World 41 (1998) 206.Google Scholar
  3. 3.
    Sedriks A J, Corrosion of Stainless Steels, Wiley InterScience, New York (1996).Google Scholar
  4. 4.
    Deng B, Wang Z, Jiang Y, Sun T, Xu J, and Li J, Corr Sci 51 (2009) 2969.CrossRefGoogle Scholar
  5. 5.
    Park C J, and Rao V S, Kwon H S, Corrosion 61 (2005) 76.CrossRefGoogle Scholar
  6. 6.
    Lopez N, Cid M, Puiggali M, Azkarate I, and Pelayo A, Mater Sci Eng A 229 (1997) 123.CrossRefGoogle Scholar
  7. 7.
    Chen W, Xue F, Tian Y, Yu D, Yu W, and Chen X, Mater Sci Eng A 646 (2015) 263.Google Scholar
  8. 8.
    Lü X, Li S, Zhang H, Wang Y, and Wang X, Int J Min Metall Mater 22 (2015) 1163.CrossRefGoogle Scholar
  9. 9.
    Iacoviello F, Boniardi M, and Vecchia G M L, Int J Fatigue 21 (1999) 957.CrossRefGoogle Scholar
  10. 10.
    Gideon B, Ward L, and Biddle G, J Miner Mater Charact Eng 7 (2008) 247.Google Scholar
  11. 11.
    Singh J, and Shahi A S, J Manuf Process 33 (2018) 126.CrossRefGoogle Scholar
  12. 12.
    Balakrishnan M, Anburaj J, Nazirudeen SSM, Neelakantan L, and Narayanan R, Trans Indian Inst Met 68 (2015) 267.CrossRefGoogle Scholar

Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringSant Longowal Institute of Engineering & Technology (Deemed to be University)Longowal, SangrurIndia

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