TY - JOUR
T1 - TEM analysis of recrystallized double forged tungsten after exposure in JUDITH 1 and JUDITH 2
AU - Van Renterghem, Wouter
AU - Uytdenhouwen, Inge
N1 - Score=10
PY - 2016/4/29
Y1 - 2016/4/29
N2 - 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 dis- locations 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.
AB - 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 dis- locations 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.
KW - Fusion
KW - Tungsten
KW - Transmission Electron Microscopy
KW - thermal shock
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/22162817
U2 - 10.1016/j.nme.2016.04.003
DO - 10.1016/j.nme.2016.04.003
M3 - Article
SN - 2352-1791
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
ER -