Advertisement

Surface Nanocrystallization Induced by Ultrasonic Shot Peening and Its Effect on Corrosion Resistance of Ti–6Al–4V Alloy

  • Sanjeev KumarEmail author
  • V. Pandey
  • K. Chattopadhyay
  • Vakil Singh
Technical Paper
  • 53 Downloads

Abstract

Alloy Ti–6Al–4V was subjected to ultrasonic shot peening (USP) for 1 min (min) and 5 min to examine the effect of surface nanostructure on corrosion resistance of this alloy in simulated body fluid (SBF). USPed samples were also subjected to stress relieving (SR) treatment at 400 °C for 1 h in the argon atmosphere (AR). The surface nanostructure and constituted phases were characterized by TEM, and the effect of USP was examined on electrochemical corrosion resistance in SBF solution. It has been observed that corrosion resistance is enhanced due to USP. The development of the resistance to corrosion is attributed to the quick formation of protective oxide scale due to extensive increase in number of grain boundaries and the associated compressive residual stress induced by USP. The relatively lower corrosion resistance and higher tendency of pitting following SR treatment of the USPed specimens are due to decreasing the associated residual stress.

Keywords

Ti–6Al–4V alloy Ultrasonic shot peening TEM Corrosion resistance 

References

  1. 1.
    Kumar S, Chattopadhyay K, Singh S R, and Singh V, Int J Surf Sci Eng 11 (2017) 23.CrossRefGoogle Scholar
  2. 2.
    Bhola R, Bhola M S, Mishra B, Olson D L, Trends Biomater Artif Organs 25 (2011) 34.Google Scholar
  3. 3.
    Elsener B, Rota A, and Bohni H, Mater Sci Forum 44 (1989) 29.Google Scholar
  4. 4.
    Xiea Y, Liua X, Huang A, Dinga C, and Chu P K, Biomaterials 26 (2005) 6129.CrossRefGoogle Scholar
  5. 5.
    Lee C K, Tribol Int 55 (2012) 7.CrossRefGoogle Scholar
  6. 6.
    Yue T M, Yu J K, and Mei Z, Mater Lett 52 (2002) 206.CrossRefGoogle Scholar
  7. 7.
    Ahmed A A, Mhaede M, and Wollmann M, Appl Surf Sci 363 (2016) 50.CrossRefGoogle Scholar
  8. 8.
    Jelliti S, Richard C, Retraint D, and Roland T, Surf Coat Technol 224 (2013) 82.CrossRefGoogle Scholar
  9. 9.
    Singh V, Pandey V, and Chattopadhyay K, Trans Indian Inst Met 69 (2016) 295.CrossRefGoogle Scholar
  10. 10.
    Ailor W H, J Electrochem Soc 120 (1973) 50.CrossRefGoogle Scholar
  11. 11.
    Oliveira N T C, and Guastaldi A C, Acta Biomater 5 (2009) 399.CrossRefGoogle Scholar
  12. 12.
    Wen M, Liu G, Gu J F, Guan W M, and Lu J, Appl Surf Sci 255 (2009) 6097.CrossRefGoogle Scholar
  13. 13.
    Yu J K, Han E H, Lu L, Wei X J, and Leung M, J Mater Sci 40 (2005) 1019.CrossRefGoogle Scholar
  14. 14.
    Kumar S, Chattopadhyay K, and Singh V, Mater Charact 121 (2016) 23.CrossRefGoogle Scholar

Copyright information

© The Indian Institute of Metals - IIM 2018

Authors and Affiliations

  • Sanjeev Kumar
    • 1
    Email author
  • V. Pandey
    • 1
  • K. Chattopadhyay
    • 1
  • Vakil Singh
    • 1
  1. 1.Department of Metallurgical Engineering, Indian Institute of TechnologyBanaras Hindu UniversityVaranasiIndia

Personalised recommendations