Effects of damage rate on irradiation hardening and post-irradiation annealing characteristics of carbon steel

被引：2
作者：
Suzuki, M [1 ]
Idei, Y [1 ]
Kizaki, M [1 ]
Onizawa, K [1 ]
机构：
[1] Japan Atom Energy Res Inst, Dept Nucl Safety Res, Tokai, Ibaraki 3191195, Japan
来源：
EFFECTS OF RADIATION ON MATERIALS: 18TH INTERNATIONAL SYMPOSIUM | 1999年 / 1325卷
关键词：
irradiation embrittlement; carbon steel; pressure vessel; dose rate effect; Charpy shift; irradiation hardening; ageing; low flux; post-irradiation annealing; recovery;
D O I：
10.1520/STP13876S
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Irradiation embrittlement in a low dose region was studied for an aluminium-killed carbon steel from the point of dose rate effects. The dose rate as low as similar to 5x10(8) n/cm(2)/s (E>1MeV) caused a Charpy transition temperature shift of more than 30 degrees C after irradiation to similar to 10(17) n/cm(2) (E>1MeV) at 240 degrees C, while a similar amount of Charpy shift was observed after similar to 10(18) n/cm(2) (E>1MeV) at higher dose rate (similar to 7x10(11) n/cm(2)/s). The effect of dose rate was obvious in the annealing response on hardness. The recovery characteristics indicated that more stable defects were produced in the material irradiated at a lower dose rate.
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页码：379 / 387
页数：9
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