Preliminary Investigation on Brazing Performance of Ti/Ti and Ti/Steel Joints Using Copper Film Deposited by PVD Technique
Preliminary Investigation on Brazing Performance of Ti/Ti and Ti/Steel Joints Using Copper Film Deposited by PVD Technique
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DOI：
10.1007/s11665-012-0121-7
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发表时间：
2012-05-01
影响因子：
2.3
通讯作者：
Tillmann, W.
中科院分区：
文献类型：
--
作者：
Elrefaey, A.;Wojarski, L.;Tillmann, W.
研究了Ti/Ti和Ti/钢真空钎焊接头的显微组织和连接特性。采用物理气相沉积技术在钎焊金属表面沉积不同厚度的铜薄膜作为钎料。在910 A ° C的温度和15分钟的保持时间下处理测试接头。对所得接头进行了表征，以确定界面层中的脆性金属间化合物，并测试了接头的剪切强度。我们的初步实验结果表明，良好的润湿质量，没有气孔和裂纹的声音接头可以实现。从化学分析预测了金属间化合物相，如Ti 2Cu，TiCu，FeTi和Fe 2 Ti。Ti/Ti接头实现了比Ti/钢接头更高的剪切强度，并且当使用厚的Cu沉积层时，拉伸剪切强度有增加的趋势。
Microstructural aspects and bonding characteristics of vacuum brazed Ti/Ti and Ti/steel were investigated. A thin-copper film, with different thicknesses, was deposited on the brazed metals by physical vapor deposition technique to serve as a brazing filler metal. Test joints were processed at a temperature of 910 A degrees C and 15 min holding time. The resultant joints were characterized to determine the brittle intermetallic compound in the interfacial layer and the shear strength of the joints were tested. Our preliminary experimental results showed that sound joints with a good wetting quality, lack of pores and cracks can be achieved. Intermetallic phases such as Ti2Cu, TiCu, FeTi, and Fe2Ti were predicted from the chemical analyses. The Ti/Ti joints achieved a higher shear strength than the Ti/steel joints and there is a tendency for the tension shear strength to increase when a thick Cu-deposited layer is used.