Open Access
Metals, volume 11, issue 9, pages 1417
Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be
Bachurina Diana
1
,
Suchkov Alexey
1
,
Gurova Julia
1
,
Kliucharev Vladislav
1
,
Vorkel Vladimir
1
,
Savelyev Maxim
1
,
Somov Pavel
2
,
Publication type: Journal Article
Publication date: 2021-09-07
Metals and Alloys
General Materials Science
Abstract
To create a DEMO reactor, it is necessary to develop high-quality technology to join tungsten with reduced-activation ferritic-martensitic (RAFM) steel (Rusfer, Eurofer, CLF-1, etc.). Difficulties arise in their direct connection due to the large difference in the coefficient of thermal expansion (CTE). To suppress the difference of CTE, intermediate interlayers are usually used, such as vanadium or tantalum, and brazing is a prospective technology to conduct the joining. The vast majority of works represent copper- or nickel-based brazing alloys, but their applicability is under significant discussion due to their activation properties. That is why, in this work, fully reduced activation 48Ti-48Zr-4Be wt.% brazing alloy was used. The following joint was made: Rusfer steel/48Ti-48Zr-4Be/Ta/48Ti-48Zr-4Be/W. The brazing was successfully carried out under a mode providing thermal heat treatment of Rusfer. Through EDS and EBSD analysis, the microstructure of the joint was determined. Shear strength of the as-joined composition was measured as 127 ± 20 MPa. The joint endured 200 thermocycles in the temperature range between 300–600 °C, but the fillet regions degraded.
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Bachurina D. et al. Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be // Metals. 2021. Vol. 11. No. 9. p. 1417.
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Bachurina D., Suchkov A., Gurova J., Kliucharev V., Vorkel V., Savelyev M., Somov P., Sevryukov O. Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be // Metals. 2021. Vol. 11. No. 9. p. 1417.
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TY - JOUR
DO - 10.3390/met11091417
UR - https://doi.org/10.3390%2Fmet11091417
TI - Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be
T2 - Metals
AU - Bachurina, Diana
AU - Suchkov, Alexey
AU - Gurova, Julia
AU - Kliucharev, Vladislav
AU - Vorkel, Vladimir
AU - Savelyev, Maxim
AU - Somov, Pavel
AU - Sevryukov, Oleg
PY - 2021
DA - 2021/09/07 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 1417
IS - 9
VL - 11
SN - 2075-4701
ER -
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@article{2021_Bachurina,
author = {Diana Bachurina and Alexey Suchkov and Julia Gurova and Vladislav Kliucharev and Vladimir Vorkel and Maxim Savelyev and Pavel Somov and Oleg Sevryukov},
title = {Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be},
journal = {Metals},
year = {2021},
volume = {11},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {sep},
url = {https://doi.org/10.3390%2Fmet11091417},
number = {9},
pages = {1417},
doi = {10.3390/met11091417}
}
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Bachurina, Diana, et al. “Brazing tungsten/tantalum/RAFM steel joint for DEMO by fully reduced activation brazing alloy 48Ti-48Zr-4Be.” Metals, vol. 11, no. 9, Sep. 2021, p. 1417. https://doi.org/10.3390%2Fmet11091417.