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The Dependence of Proton Irradiated Microstructure on Dose, Temperature and Composition of Austenitic Stainless Steels

Published online by Cambridge University Press:  15 February 2011

J. Gan ,
T. Allen  and
G. S. Was
J. Gan
Affiliation:
Department of Nuclear Engineering and Radiological Science, The University of Michigan, Ann Arbor, MI 48109, USA
T. Allen
Affiliation:
Department of Nuclear Engineering and Radiological Science, The University of Michigan, Ann Arbor, MI 48109, USA
G. S. Was
Affiliation:
Department of Nuclear Engineering and Radiological Science, The University of Michigan, Ann Arbor, MI 48109, USA
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Abstract

The radiation-induced microstructure of austenitic stainless steel was investigated using proton irradiation. Samples of Fe-20Cr-24Ni and Ni-18Cr-9Fe were irradiated using 3.2 MeV protons at a dose rate of 7×10−6 dpa/s between 300°C and 600°C. The irradiation produced a microstructure consisting of dislocation loops and voids in both alloys. The number density and size of dislocation loops and voids are strong functions of irradiation temperature with the number density decreasing and the size increasing with temperature for both defects. The dose dependence of dislocation loop density saturated around 1.0 dpa for Fe-20Cr-24Ni and 0.3 dpa for Ni-18Cr-9Fe. The microstructure evolution in the nickel base alloy is faster than that in Fe-20Cr-24Ni. The dose and temperature dependence of proton irradiated Fe-20Cr-24Ni closely follow that of neutron irradiated austenitic stainless steels. The changes in yield strength due to irradiation were estimated from nano indenter hardness measurements and compared to calculation using a dispersed barrier hardening model. Results were in close agreement with each other. Yield strength changes as a function of dose for proton irradiated Fe-20Cr-24Ni are similar to those resulting from neutron irradiation of austenitic stainless steels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 439: Symposium B – Microstructure Evolution During Irradiation , 1996 , 445
Copyright
Copyright © Materials Research Society 1997

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References

1. Maziasz, P. J., J. Nucl. Mater. 205 (1993) 118 Google Scholar
2. Damcott, D. L., Cookson, J. M., Carter, R. D. Jr., Martin, J. R., Atzmon, M. and Was, G. S. Radiation Eff. Def. Solids, 118 (1991) 383 Google Scholar
3. Higgy, H. R. and Hammad, F. H., J. Nucl. Mater. 55 (1975) 177 Google Scholar
4. Lucas, G. E., J. Nucl. Mater. 206 (1993) 292 Google Scholar
5. Carter, R. D., Damcott, D. L., Atzmon, M., Was, G. S., J. Nucl. Mater. 205 (1993) 361 Google Scholar
6. Knox, W. A., Ultramicroscopy 1 (1976) 175.Google Scholar
7. Lorreto, M. H., Electron Beam Analysis of Materials, 2nd edition, 1994 Google Scholar
8. Pethica, J. B., Hutchings, R. and Oliver, W. C., Philos. Mag. A, 1983, Vol.48, 593 Google Scholar
9. Doerner, M. F., Nix, W. D., J. Mater. Res., 1 (4), Jul/Aug 1986, p607 Google Scholar
10. Muroga, Takeo, Garner, Frank A., McCarthy, John M., and Yoshida, Naoaki Effects of Radiation on Materials: 15th Inter. Symp., ASTM STP 1125, Stoller, R.E., Kumar, A.S., and Gelles, D.S., Eds, 1992, pp. 1015–1033 Google Scholar
11. Zinkle, S. J., Maziasz, P. J. and Stoller, R. E., J. Nucl. Mater., 206 (1993) 270 Google Scholar
12. Allen, T. R., Was, G. S., and Kenik, E.A., J. Nucl. Mater. in pressGoogle Scholar
13. Damcott, D. L., Allen, T., Was, G. S., J. Nucl. Mater. 225 (1995) 97 Google Scholar
14. Garner, F. A. and Wolfer, W. G., J. Nucl. Mater., 122 (1984) 201 Google Scholar
15. Bullough, C. K., et al, “Materials For Nuclear Core Application” BNES, London, 1987 Google Scholar
16. Odette, G. R. and Lucas, G. E., DOE/ER-0313/6, 1989, pp317 Google Scholar