期刊
FUSION ENGINEERING AND DESIGN
卷 146, 期 -, 页码 1810-1813出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2019.03.041
关键词
Tungsten alloy; Self-passivating alloy; Plasma-facing materials; Brazing; Eurofer
资金
- Euratom research and training programme 2014-2018 [633053]
- MULTIMAT-CHALLENGE program [S2013/MIT-2862]
The present work proposes a brazing procedure to join a self-passivating tungsten alloy (W-10Cr-0.5Y) with Eurofer. The results indicated the achievement of high continuity W-Eurofer joints using 80Cu-20Ti filler material, which involves operative brazeability. The resulting microstructure of the braze changes considerably compared to the brazing attempts with pure tungsten, which is associated to the reactive character of chromium. A high interaction between molten filler and W base material close to the braze was detected, with preferential grain boundary penetration of Cu-Ti into W alloy. It gave rise to a loss of hardness at the W base material near the joint. Regarding to the strength of the joints, shear strength of similar to 90 MPa was obtained.
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