| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7967250 | Journal of Nuclear Materials | 2014 | 5 Pages |
Abstract
Cross-sectional and bulk specimens of a 20% cold-worked 316 austenitic stainless steel (CW 316 SS) has been characterized by TEM, XRD and nanoindentation to determine the microstructural evolution and mechanical property changes of 316 SS after irradiation with 7Â MeV Xe26+ ions. TEM results reveal the presence of dislocation loops with a number density of approximately 3Â ÃÂ 1022Â mâ3 and sizes between 3 to 10Â nm due to the collapse of vacancy rich cores inside displacement cascades. Peak broadening observed in XRD diffraction patters reveal systematic changes to lattice parameters due to irradiation. The calculated indentation values in irradiated 316 SS were found to be much higher in comparison to the unirradiated specimen, indicating the dose dependent effect of irradiation on hardness. The relationship between irradiation induced microstructural evolution and the changes to the mechanical properties of CW 316 SS are discussed in the context of fluence and irradiation temperature.
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Authors
H.F. Huang, J.J. Li, D.H. Li, R.D. Liu, G.H. Lei, Q. Huang, L. Yan,