Skip to main content Accessibility help
×
Home

Refinement of Irradiation and Analysis Techniques for Radiation-Induced Segregation

  • T. R. Allen (a1), J. M. Cookson (a1), D. L. Damcott (a1) and G. S. Was (a1)

Abstract

Radiation-induced segregation (RIS) has been implicated as a potential contributor to irradiation assisted stress corrosion cracking in light water reactor core components. To better understand changes to grain boundary chemistry during irradiation, RIS was measured in ultra-high purity (UHP) 304 stainless steel using Auger electron spectroscopy (AES). Variations in measured grain boundary concentration, both within a sample and between samples, are reduced by refinements in both the radiation and the AES techniques. These refinements include improvements in temperature control, uniformity of sample-to-sample dose, grain boundary acceptance criteria, amount of intergranular fracture, and amount of beam current used in analysis. AES measurements on samples irradiated at 400°C to 1.0 dpa show how implementing the technique refinements reduces the variability in the measured concentrations. Additionally, measurements from regions of ductile tearing in samples irradiated to 0.1 and 1.0 dpa at 400°C, to 1.0 dpa at 200°C, and from unirradiated samples show that sensitivity factors must be determined to obtain the most accurate measurement of grain boundary composition.

Copyright

References

Hide All
[1] Damcott, D. L., Was, G. S., and Bruemmer, S. M., Proceedings of the MRS Fall Meeting Symposium Y: Microstructure of Irradiated Materials, Edited by. Robertson, I. M., Rehn, L. E., Zinkle, S. J., Phythian, W. J., (Mater. Res. Soc. Proc. 373, Pittsburgh, PA, 1995), p. 131.
[2] Allen, T. R., Was, G. S., and Kenik, E. A., accepted in J. Nucl. Mater.
[3] Carter, R. D., Damcott, D. L., Atzmon, M., Was, G. S., and Kenik, E. A., J. Nucl. Mater. 205 (1993) 361.
[4] Cookson, J. M., Carter, R. D., Damcott, D. L., Atzmon, M., and Was, G. S., J. Nucl. Mater., 202 (1993) 104.
[5] Walmsley, J., Spellward, P., Fisher, S., and Jenssen, A., Proc. Seventh Int. Symp. on Env. Deg. of Materials in Nuclear Power Systems-Water Reactors, edited by Gold, R.E and Simonen, E.P, Breckenridge, CO (1995), p. 985.
[6] Davis, L. E., MacDonald, N. C., Palmberg, P. W., Riach, G. E., and Weber, R. E., Handbook of Auger Electron Spectroscopy 2nd Edition, Perkin-Elmer Corporation, Eden Prairie, MN.

Refinement of Irradiation and Analysis Techniques for Radiation-Induced Segregation

  • T. R. Allen (a1), J. M. Cookson (a1), D. L. Damcott (a1) and G. S. Was (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed