TY - JOUR
T1 - Tensile and impact properties of tungsten-rhenium alloy for plasma-facing components in fusion reactor
AU - Watanabe, Shotaro
AU - Nogami, Shuhei
AU - Reiser, Jens
AU - Rieth, Michael
AU - Sickinger, Sven
AU - Baumgärtner, Siegfried
AU - Miyazawa, Takeshi
AU - Hasegawa, Akira
N1 - Funding Information:
Authors are grateful to Dr. Toru Ohnuma of Research Center for Remediation Engineering of Living Environments Contaminated with Radioisotopes, Tohoku university for supporting our works using an SEM (JSM-6510, JEOL Ltd.) of their research center. Authors are also grateful to the staff of Miyakojima Seisakusho Co. Ltd. for their optimization of the fabrication process of the Charpy impact test specimens. This work was supported by JSPS KAKENHI Grant Number 15 K K0224 , 26289351 , and 18H01196 .
PY - 2019/11
Y1 - 2019/11
N2 - Low temperature brittleness and high ductile-to-brittle transition temperature (DBTT) are potential drawbacks related to the mechanical properties of tungsten (W) for divertor application in fusion reactors. In the present study, to improve the mechanical properties of W, rhenium (Re) addition has been applied as a solid solution alloying method. In this paper, the effects of Re addition on the tensile and Charpy impact properties of W thick plate fabricated by powder metallurgy and hot rolling were investigated, which has enough volume as the plasma facing material and the microstructural uniformity for mass-production. At the temperature below 1000 °C, the W-3%Re showed 5–30% higher strength, 10–35% higher total elongation, 100 °C lower DBTT, and 16% higher upper shelf energy than those of the pure W.
AB - Low temperature brittleness and high ductile-to-brittle transition temperature (DBTT) are potential drawbacks related to the mechanical properties of tungsten (W) for divertor application in fusion reactors. In the present study, to improve the mechanical properties of W, rhenium (Re) addition has been applied as a solid solution alloying method. In this paper, the effects of Re addition on the tensile and Charpy impact properties of W thick plate fabricated by powder metallurgy and hot rolling were investigated, which has enough volume as the plasma facing material and the microstructural uniformity for mass-production. At the temperature below 1000 °C, the W-3%Re showed 5–30% higher strength, 10–35% higher total elongation, 100 °C lower DBTT, and 16% higher upper shelf energy than those of the pure W.
KW - Alloying
KW - Charpy impact properties
KW - Fusion reactor
KW - Recrystallization
KW - Rhenium
KW - Tensile properties
KW - Tungsten
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U2 - 10.1016/j.fusengdes.2019.111323
DO - 10.1016/j.fusengdes.2019.111323
M3 - Article
AN - SCOPUS:85072271453
VL - 148
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
M1 - 111323
ER -