TY - JOUR
T1 - Effect of thermal heat loads on the microstructure of recrystallized double forged tungsten
AU - Van Renterghem, Wouter
AU - Uytdenhouwen, Inge
N1 - Score = 10
PY - 2013/10
Y1 - 2013/10
N2 - Two recrystallized double forged W materials, one which was pre-heated up to 400 ◦C and exposed to 120 keV electrons during 100 pulses of 1 ms giving a total power of 1.26 GW/m2 and one as reference which was only pre-heated to 400 ◦C, were investigated with SEM and TEM to reveal the effect of the exposure on the microstructure. The reference material revealed that the elected material contains only some large angle grain boundaries and occasionally a few isolated dislocations. The e-beam exposure of the material resulted only in a deformation of the matrix. The surface has roughened and series of parallel ridges were observed in the SEM images. However, no cracks or other signs of material rupture were found. On a microscopic level the deformation manifested as an increased number of tangled dislocations
and the reappearance of small angle tilt boundaries.
AB - Two recrystallized double forged W materials, one which was pre-heated up to 400 ◦C and exposed to 120 keV electrons during 100 pulses of 1 ms giving a total power of 1.26 GW/m2 and one as reference which was only pre-heated to 400 ◦C, were investigated with SEM and TEM to reveal the effect of the exposure on the microstructure. The reference material revealed that the elected material contains only some large angle grain boundaries and occasionally a few isolated dislocations. The e-beam exposure of the material resulted only in a deformation of the matrix. The surface has roughened and series of parallel ridges were observed in the SEM images. However, no cracks or other signs of material rupture were found. On a microscopic level the deformation manifested as an increased number of tangled dislocations
and the reappearance of small angle tilt boundaries.
KW - Tungsten
KW - Microstructure
KW - Thermal heat load
KW - Transmission electron microscopy
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_131086
UR - http://knowledgecentre.sckcen.be/so2/bibref/10532
U2 - 10.1016/j.fusengdes.2013.05.011
DO - 10.1016/j.fusengdes.2013.05.011
M3 - Article
SN - 0920-3796
VL - 88
SP - 1650
EP - 1654
JO - Fusion Engineering & Design
JF - Fusion Engineering & Design
IS - 9-10
T2 - 2012 - SOFT
Y2 - 24 September 2012 through 28 September 2012
ER -