Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
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DOI：
10.1016/j.matdes.2011.04.051
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发表时间：
2012
影响因子：
8.4
通讯作者：
Kavian Omar Cooke;T. Khan;G. Oliver
中科院分区：
文献类型：
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作者：
Kavian Omar Cooke;T. Khan;G. Oliver
对含15vol.%氧化铝颗粒的Al-6061合金在不同连接温度下进行了瞬间液相扩散连接。中间层采用厚度为5μm、含18vol.%纳米氧化铝颗粒的电沉积镍层。接头的形成归因于Ni在Al-6061合金中的固相扩散，然后在接头界面形成共晶和等温凝固。扫描电子显微镜(SEM)、波长色散光谱(WDS)和X射线衍射仪(X射线衍射仪)对接头区域的分析表明，接头区域内形成了Al3Ni、Al9FeNi和Ni3Si等金属间化合物相。结果表明，在中间层中加入纳米氧化铝分散体可以提高接头强度。
Transient liquid phase diffusion bonding (TLPDB) of Al-6061 containing 15vol.% alumina particles was carried out at various bonding temperatures. A 5μm thick electrodeposited Ni-coating containing 18vol.% nano-size alumina particles was used at the interlayer. Joint formation was attributed to the solid-state diffusion of Ni into the Al-6061 alloy followed by eutectic formation and isothermal solidification at the joint interface. Examination of the joint region using scanning electron microscopy (SEM), wavelength dispersive spectroscopy (WDS) and X-ray diffraction (XRD) showed the formation of intermetallic phases such as Al3Ni, Al9FeNi and Ni3Si within the joint zone. The results indicate that the incorporation of nano-size Al2O3dispersions into the interlayer can be used to improve joint strength.