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The Effect of Environmental Chemistry on the Pb Assisted Stress Corrosion Cracking Susceptibility of Mill-Annealed Alloy 22 and GTAW Weldments

  • Aladar A. Csontos (a1), Yi-Ming Pan (a2), Darrell S. Dunn (a2), Leitai Yang (a2) and Gustavo A. Cragnolino (a2)...

Abstract

The susceptibility of mill-annealed (MA) and gas tungsten arc welded (GTAW) Alloy 22 to Pb-assisted stress corrosion cracking (PbSCC) was evaluated in supersaturated PbCl2 and Pb(NO3)2 solutions. The solution chemistries and pH were varied to evaluate the effects of specific Pb-bearing species on the SCC resistance of GTAW Alloy 22 double U-bend samples. Anodic polarization tests in acidic and basic supersaturated Pb(NO3)2 solutions indicated that the passive current densities generally increased with applied potential. These results were then compared to previous anodic polarizations results for supersaturated acidic PbCl2 solutions. Constant deformation SCC tests indicate that MA and GTAW Alloy 22 were resistant to PbSCC in supersaturated PbCl2 (16,000ppm Pb, 95°C, pH 0.5, and Eapplied = -100, -50, 0, and 50mVSCE) and Pb(NO3)2 (16,000ppm Pb, 95°C, pH 3.9 and 10.7 and Eapplied = 50 and 140mVSCE, respectively). The overall results from this PbSCC investigation suggest that MA and GTAW Alloy 22 are resistant to SCC in supersaturated PbCl2 and Pb(NO3)2 solutions at 95°C. Provided that these high Pb concentrations are not attainable in the anticipated repository environments, Alloy 22 is unlikely to be susceptible to SCC by the presence of Pb.

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1. Pulvirenti, A.L., Needham, K. M., Adel-Hadadi, M. A., Marks, C. R., Gorman, J. A., and Barkatt, A., Scientific Basis for Nuclear Waste Management XXV, Mcgrail, B.P. and Cragnolino, G.A., eds. (Mater. Res. Soc. Proc. 713, Warrendale, PA, 2002) pp. 8995.
2. Estill, J.C., King, K.J., Fix, D.V., Spurlock, D.G., Hurst, G.A., Gordon, S.R., Mccright, R.D., and Rebak, R.B., Corrosion 2002, Paper No. 535 (NACE Intl., Houston, TX, 2002).
3. Andresen, P.L., Young, L.M., Catlin, G.M., and Emigh, P.W., 2003 TMS Fall Meeting – Effect of Processing on Materials Properties for Nuclear Waste Disposition Conference Proceedings, Met. Trans., ed. Rebak, R., in press, 2004.
4. Pan, Y., Dunn, D.S., Yang, L., and Cragnolino, G.A., Scientific Basis for Nuclear Waste Management XXVI, Mcgrail, B.P. and Cragnolino, G.A., eds. (Mater. Res. Soc. Proc. 757, Warrendale, PA, 2003), pp. II4.5.18.
5. Csontos, A.A., Pan, Y.M., Dunn, D.S., Yang, L., and Cragnolino, G.A., 2003 TMS Fall Meeting - Effect of Processing on Materials Properties for Nuclear Waste Disposition Conference Proceedings, Met. Trans., ed. Rebak, R., in press, 2004.
6. Perfect, D.L., Faunt, C.C., Steinkampf, W.C., and Turner, A.K., Hydrochemical Data Base for the Death Valley Region, California and Nevada, Open-File Report 94-305 (U.S. Geological Survey, Denver, CO, 1995).
7. Wolf, S.F., Argonne National Laboratory J-13/EJ-13 Compositional Analysis, email correspondence, 2000.
8. ASTM Standard Practice G30-97. Annual Book of ASTM Standards. Vol. 03.02 (ASTM Intl., West Conshohocken, PA, 2001).
9. Dunn, D.S., Pan, Y.-M., and Cragnolino, G.A., Corrosion 2000, Paper No. 206 (NACE Intl., Houston, TX, 2000).
10. Yang, L., Center for Nuclear Waste Regulatory Analyses Software Validation Report for Environmental Simulation Program Version 6.6 Corrosion Simulation Program Version 2.3, Environmental Simulation Program for Concentrated Brines (ESPCB) Version 7.0 Alfa, and Streamanalyzer 1.2, December, 2003.

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