Effects of processing parameters on microstructure and mechanical behavior of SiO2/Ti―6Al―4V joint brazed with AgCu/Ni interlayer
Effects of processing parameters on microstructure and mechanical behavior of SiO2/Ti―6Al―4V joint brazed with AgCu/Ni interlayer
复制标题
DOI：
10.1016/j.msea.2009.10.050
复制
发表时间：
2010-03
期刊：
影响因子：
6.4
通讯作者：
J. Feng;D. Liu;L. X. Zhang;Xingtao Lin;P. He
中科院分区：
文献类型：
--
作者：
J. Feng;D. Liu;L. X. Zhang;Xingtao Lin;P. He
利用AgCu/Ni复合中间层成功地将二氧化硅微晶玻璃连接到了Ti-6Al-4V合金上。钎焊温度为950℃~980℃，保温时间为1min~45min。首先熔化AgCu共晶箔，然后进行Ti-Cu-Ni三元共晶反应，然后Ti与SiO_2玻璃陶瓷反应。所有的钛原子都来自于Ti-6Al-4V合金，而不是来自于钎焊合金。研究了钎焊温度和保温时间对界面结构和接头强度的影响。当钎焊温度为970℃，保温时间为10min时，钎焊接头的最大抗剪强度可达110 Mpa，且SiO_2玻璃陶瓷部分出现断裂。而当钎焊工艺参数选择不当时，SiO_2侧较薄的反应层是接头的薄弱环节。
SiO2glass ceramic has been successfully joined to Ti–6Al–4V alloy with AgCu/Ni composite interlayer. The brazing temperature varies from 950°C to 980°C, with the holding time ranging from 1min to 45min. AgCu eutectic foil melted first, followed by the Ti–Cu–Ni ternary eutectic reaction, then Ti reacted to SiO2glass ceramic. All of Ti atoms came from Ti–6Al–4V alloy but not from braze alloy. The effects of brazing temperature and dwelling time on interface structure and joint strength were investigated in the present work. The largest shear strength of brazed joint could reach 110MPa when the brazing temperature was 970°C, holding time was 10min, and fracture occurred in the SiO2glass ceramic part. While the thin reaction layer at SiO2side is the weak part of the joint when the brazing parameter is not appropriate.