Research output: Contribution to journal › Article › peer-review
Comparison of the thermal shock performance of different tungsten grades and the influence of microstructure on the damage behaviour. / Wirtz, M.; Linke, J.; Pintsuk, G.; Singheiser, L.; Uytdenhouwen, Inge; Massaut, Vincent (Peer reviewer).
In: Physica Scripta, Vol. 2011, No. T145, 12.2011, p. 014058-014058.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Comparison of the thermal shock performance of different tungsten grades and the influence of microstructure on the damage behaviour
AU - Wirtz, M.
AU - Linke, J.
AU - Pintsuk, G.
AU - Singheiser, L.
AU - Uytdenhouwen, Inge
A2 - Massaut, Vincent
N1 - Score = 0
PY - 2011/12
Y1 - 2011/12
N2 - The thermal shock performances of two new tungsten grades with 1 and 5 wt% of tantalum were characterized with the electron beam facility JUDITH 1. As a reference material, ultra-high-purity tungsten (W-UHP) with a purity of 99.9999 wt% was used. The induced thermal shock crack networks and surface modifications were analysed by a scanning electron microscope, light microscopy and laser profilometry. Damage and cracking thresholds were defined for all materials as a function of absorbed power density and base temperature. The materials showed significantly different thermal shock behaviour, which is, among others, expressed by differences in cracking patterns, i.e. crack distance and depth. These results allow us to quantify the influence of the materials’ mechanical and thermal properties on the thermal shock performance. Furthermore, the specific grain structure of the materials has a significant influence on crack propagation towards the bulk material.
AB - The thermal shock performances of two new tungsten grades with 1 and 5 wt% of tantalum were characterized with the electron beam facility JUDITH 1. As a reference material, ultra-high-purity tungsten (W-UHP) with a purity of 99.9999 wt% was used. The induced thermal shock crack networks and surface modifications were analysed by a scanning electron microscope, light microscopy and laser profilometry. Damage and cracking thresholds were defined for all materials as a function of absorbed power density and base temperature. The materials showed significantly different thermal shock behaviour, which is, among others, expressed by differences in cracking patterns, i.e. crack distance and depth. These results allow us to quantify the influence of the materials’ mechanical and thermal properties on the thermal shock performance. Furthermore, the specific grain structure of the materials has a significant influence on crack propagation towards the bulk material.
KW - Fusion
KW - tungsten
KW - thermal shock
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_119327
UR - http://knowledgecentre.sckcen.be/so2/bibref/12205
U2 - 10.1088/0031-8949/2011/T145/014058
DO - 10.1088/0031-8949/2011/T145/014058
M3 - Article
VL - 2011
SP - 14058
EP - 14058
JO - Physica Scripta
JF - Physica Scripta
SN - 0031-8949
IS - T145
T2 - PFMC 2011/ FEMaS 2011- 13th International Workshop on Plasma Facing Materials and Components for Fusion Applications and 1st International Conference on Fusion Energy Materials Science
Y2 - 9 May 2011 through 13 May 2011
ER -
ID: 366484