Joining tungsten with steel for DEMO: Simultaneous brazing by Cu-Ti amorphous foils and heat treatment
Joining tungsten with steel for DEMO: Simultaneous brazing by Cu-Ti amorphous foils and heat treatment
复制标题
DOI：
10.1016/j.fusengdes.2020.112099
复制
发表时间：
2020-11
影响因子：
1.7
通讯作者：
D. Bachurina;A. Suchkov;J. Gurova;M. Savelyev;P. S. Dzhumaev;I. Kozlov;R. Svetogorov;M. Leont'eva-S
中科院分区：
文献类型：
--
作者：
D. Bachurina;A. Suchkov;J. Gurova;M. Savelyev;P. S. Dzhumaev;I. Kozlov;R. Svetogorov;M. Leont'eva-S
开发可靠的钨钢连接技术对于 DEMO 应用至关重要；然而，由于它们的物理性质差异很大，这很困难。为了解决这个问题，进行了高温钎焊。将快速凝固成箔的Cu-Ti钎料与补偿钒中间层一起使用，得到EK-181钢/Cu-28Ti/V/Cu-50Ti/W和EK-181/Cu-50Ti/V/Cu-50Ti/W钎焊接头。通过光学显微镜、SEM（EDX、EBSD）和同步加速器 XRD 研究了接缝的微观结构。热循环和剪切强度测试表明 Cu-28Ti wt.与 Cu-50Ti 重量相比，% 钎焊合金可确保更牢固的接头。 %。 Cu-28Ti 重量。采用%钎料合金进行高温钎焊，钎焊方式相当于传统EK-181钢热处理。结果表明，热处理的每一步都会影响微观结构和剪切强度。
Development of a reliable technology to join tungsten with steel is essential for DEMO application; however, it is difficult due to large differences in their physical properties. To solve this problem, high-temperature brazing was carried out. Cu-Ti brazing alloys, which were rapidly solidified into foil, were used together with a compensating vanadium interlayer, so the EK-181 steel/Cu-28Ti/V/Cu-50Ti/W and EK-181/Cu-50Ti/V/Cu-50Ti/W brazed joints were obtained. The microstructures of the seams were investigated by optical microscopy, SEM (EDX, EBSD) and synchrotron XRD. Thermocycling and shear strength tests showed that Cu-28Ti wt. % brazing alloy ensures a firmer joint compared to Cu-50Ti wt. %. The Cu-28Ti wt. % brazing alloy was used to perform high-temperature brazing in the brazing mode equivalent to traditional EK-181 steel heat treatment. It showed that every step of the heat treatment affected the microstructures and the shear strength.