کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7987664 1515281 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
TEM analysis of recrystallized double forged tungsten after exposure in JUDITH 1 and JUDITH 2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
TEM analysis of recrystallized double forged tungsten after exposure in JUDITH 1 and JUDITH 2
چکیده انگلیسی
Five samples of recrystallized pure tungsten were exposed to transient heat loads using the electron beam of the JUDITH 1 and JUDITH 2 installations of Forschungszentrum Jülich. The heat flux and base temperature were the same for all samples; only the number of pulses and exposure device differed. Transmission electron microscopy was applied to determine the first defects that are introduced during exposure and to compare the effects of the two machines. With increasing number of pulses, first dislocations are formed near the grain boundaries, and then line dislocations and clusters of dislocations appear within the grains. Upon prolonged exposure, the dislocations migrate and cluster in dislocation pile-ups. Comparing exposure in JUDITH 1 to JUDITH 2, the amount of defects is much higher in the samples exposed in JUDITH 1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Materials and Energy - Volume 9, December 2016, Pages 484-489
نویسندگان
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