کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9953544 | 1515273 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Instability of MX and M23C6 type precipitates in F82H steels under 2.8Â MeV Fe2+ irradiation at 673Â K
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Instability of MX and M23C6 type precipitates in F82H steels under 2.8Â MeV Fe2+ irradiation at 673Â K Instability of MX and M23C6 type precipitates in F82H steels under 2.8Â MeV Fe2+ irradiation at 673Â K](/preview/png/9953544.png)
چکیده انگلیسی
The purpose of this study is to investigate the response of the precipitates against irradiation in F82H steels which are considered as main candidate structure material for the fusion DEMO reactor blanket. M23C6-type precipitates contained F82H-IEA steel, and MX- and M23C6-type precipitates contained F82H-BA12 steel were selected as experimental specimens. Iron irradiation at 673â¯K using ion accelerator was performed on both steels up to 50 dpa. After irradiation, the instability behavior of precipitates was characterized using transmission electron microscopy. It is found that in F82H-IEA specimens, the number density of radiation defects at 20 dpa was 3.26â¯Ãâ¯1021 mâ3, and the amorphization of M23C6 was undetected up to 50 dpa. Although Ostwald ripening occurred in M23C6 precipitates, the average size of M23C6 mildly decreased with irradiation dose within this study. For F82H-BA12 specimens, the shrinkage rate of MX- and M23C6-type precipitates was estimated respectively as 0.06 and 0.03â¯nm/dpa. Hence, the MX and M23C6-type precipitates in F82H steel exhibit an excellent irradiation resistance under the present irradiation condition. Moreover, the behaviors like amorphization and weakening in contrast were not observed in M23C6 precipitates in both specimens, which is different from electron irradiation, presumably due to the factors such as different damage rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Materials and Energy - Volume 17, December 2018, Pages 56-61
Journal: Nuclear Materials and Energy - Volume 17, December 2018, Pages 56-61
نویسندگان
Sho Kano, Yang Huilong, Shen Jingjie, Zhao Zishou, John McGrady, Dai Hamaguchi, Mamami Ando, Hiroyasu Tanigawa, Hiroaki Abe,