کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7963482 | 1514146 | 2018 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of post-irradiation annealing on the irradiated microstructure of neutron-irradiated 304L stainless steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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![عکس صفحه اول مقاله: Effect of post-irradiation annealing on the irradiated microstructure of neutron-irradiated 304L stainless steel Effect of post-irradiation annealing on the irradiated microstructure of neutron-irradiated 304L stainless steel](/preview/png/7963482.png)
چکیده انگلیسی
Post-irradiation annealing was performed on a 304L SS that was irradiated to 5.9 dpa in the Barsebäck 1 BWR reactor. Evolution of dislocation loops, radiation-induced solute clusters and radiation-induced segregation at the grain boundary was investigated following thermal annealing at 500â¯Â°C and 550â¯Â°C up to 20â¯h. Dislocation loops, Ni-Si and Al-Cu clusters, and enrichment of Ni, Si and depletion of Cr at the grain boundary were observed in the as-irradiated condition. Dislocation loop size did not change significantly after annealing at 550â¯Â°C for 5â¯h but the loop number density decreased considerably and loops mostly disappeared after annealing at 550â¯Â°C for 20â¯h. The average size of Ni-Si and Al-Cu clusters increased while the number density decreased with annealing. The increase in cluster size was due to diffusion of solutes rather than cluster coarsening. Significant volume fractions of Ni-Si and Al-Cu clusters still remained after annealing at 550â¯Â°C for 20â¯h. Substantial recovery of Cr and Ni at the grain boundary was observed after annealing at 550â¯Â°C for 5â¯h but neither Cr nor Ni was fully recovered after 20â¯h. Annihilation of dislocation loops, driven by the thermal vacancy concentration gradient caused by the strain field and stacking fault associated with the loops appeared to be faster than annihilation of solute clusters and recovery of Ni and Si at the grain boundary, both of which are driven by the solute concentration gradients.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 220-234
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 220-234
نویسندگان
Z. Jiao, J. Hesterberg, G.S. Was,