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In-Situ Electrochemical Investigations of a Nickel-Based Alloy Subjected to Fatigue

  • Symposium: Deformation & Fracture from Nano to Macro: Honoring W.W. Gerberich’s 70th Birthday
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Abstract

The HASTELLOY C2000 superalloy is a commercially designed superalloy manufactured to function in reducing and oxidizing corrosive solutions. The industrial applications have tremendous potential in automotive, structural, aviation, and storage components. Although C2000 demonstrates good reducing and oxidizing traits in extremely aggressive media (which are attractive features of its chemistry), changes in the mechanical properties are believed to be insignificant due to its strong propensity to passivate under corrosive conditions. The ductility behavior and corrosion properties of C2000 are superior to those of stainless steels. The objective of the present study is to examine the corrosion-fatigue behavior of C2000 in a 3.5 wt pct sodium-chloride (NaCl) solution. C2000 submerged in 3.5 wt pct NaCl at room temperature is not susceptible to localized corrosion, such as pitting, during fatigue. At an accelerated potential of 350 mV, the current responses show an increase in the current due to slip steps emerging to the surface as a result of fatigue. The crack-initiation site and the examination of the fracture morphology are discussed.

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Notes

  1. HASTELLOY is a trademark of Haynes International, Kokomo, IN.

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Author notes

  1. R.V. Steward (Graduate Student, Materials Scientist/Engineer)

    Present address: Research, Development, and Manufacturing (RDM), Schlumberger, Sugar Land, TX, USA

  2. T.A. Saleh (Graduate Student, Research Assistant)

    Present address: Research and Development, Los Alamos National Laboratory, Los Alamos, NM, USA

Authors and Affiliations

  1. Materials Science and Engineering Department, University of Tennessee–Knoxville, Knoxville, TN, 37996-2200, USA

    R.V. Steward (Graduate Student, Materials Scientist/Engineer), G. Wang (Research Assistant), R.A. Buchanan (Head, Professor), P.K. Liaw (Racheff Chair of Excellence Professor) & T.A. Saleh (Graduate Student, Research Assistant)

  2. Haynes International, Inc, Kokomo, IN, 46904-9013, USA

    D.L. Klarstrom (Director of Research and Development) & S.N. Meck (Senior Corrosion Engineer)

Authors
  1. R.V. Steward
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  2. G. Wang
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  3. R.A. Buchanan
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  4. P.K. Liaw
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  6. D.L. Klarstrom
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  7. S.N. Meck
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Corresponding author

Correspondence to R.V. Steward.

Additional information

This article is based on a presentation given in the symposium entitled “Deformation and Fracture from Nano to Macro: A Symposium Honoring W.W. Gerberich’s 70th Birthday,” which occurred during the TMS Annual Meeting, March 12–16, 2006 in San Antonio, Texas and was sponsored by the Mechanical Behavior of Materials and Nanomechanical Behavior Committees of TMS.

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Steward, R., Wang, G., Buchanan, R. et al. In-Situ Electrochemical Investigations of a Nickel-Based Alloy Subjected to Fatigue. Metall Mater Trans A 38, 2226–2234 (2007). https://doi.org/10.1007/s11661-007-9231-5

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  • DOI: https://doi.org/10.1007/s11661-007-9231-5

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