TY - JOUR
T1 - Characterization of microstructure and microhardness of Neutron irradiated Inconel X-750
AU - Wang, Qiang
AU - Judge, Colin D.
AU - Howard, Cameron
AU - Mattucci, Mitchell
AU - Rajakumar, Heygaan
AU - Skippon, Travis
AU - Daymond, Mark R.
AU - Bickel, Grant
N1 - Funding Information:
This study was funded by Atomic Energy of Canada Limited, under the auspices of the Federal Nuclear Science and Technology Program. The research was conducted at the Canadian Nuclear Laboratories. The authors would also like to acknowledge the support of the CANDU Owners Group (COG) and would like to thank Travis Casagrande and Andreas Korinek at CCEM for preparing FIB samples for us.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/5
Y1 - 2022/5
N2 - In this study, we characterized the microstructure evolution and hardness of Inconel X-750 samples that were irradiated in-reactor at several different dose rates and temperatures and at doses up to 84 dpa. The irradiation induced lattice defects, the stability of γ’ precipitates, and the formation of helium bubbles were studied. Detailed statistics regarding the size and density of those features were obtained. The combined effects from irradiation dose, dose rate, and temperature on the disordering and dissolution of precipitates and the formation of bubbles were discussed. The isolated contributions of those microstructural features to the total material strength were calculated based on the Dispersed Barrier Hardening (DBH) model. The spatial distribution of He bubbles, especially the visible large ones (>2 nm), were also found to either correlate or anti-correlate with the spatial distribution of solute elements, e.g., Ti, Fe, and Cr, at doses higher than 75 dpa.
AB - In this study, we characterized the microstructure evolution and hardness of Inconel X-750 samples that were irradiated in-reactor at several different dose rates and temperatures and at doses up to 84 dpa. The irradiation induced lattice defects, the stability of γ’ precipitates, and the formation of helium bubbles were studied. Detailed statistics regarding the size and density of those features were obtained. The combined effects from irradiation dose, dose rate, and temperature on the disordering and dissolution of precipitates and the formation of bubbles were discussed. The isolated contributions of those microstructural features to the total material strength were calculated based on the Dispersed Barrier Hardening (DBH) model. The spatial distribution of He bubbles, especially the visible large ones (>2 nm), were also found to either correlate or anti-correlate with the spatial distribution of solute elements, e.g., Ti, Fe, and Cr, at doses higher than 75 dpa.
UR - https://www.scopus.com/pages/publications/85126060123
UR - https://www.mendeley.com/catalogue/e39968a2-a20e-35dc-90c2-71f49bbcbb7a/
U2 - 10.1016/j.jnucmat.2022.153644
DO - 10.1016/j.jnucmat.2022.153644
M3 - Article
AN - SCOPUS:85126060123
SN - 0022-3115
VL - 563
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 153644
ER -