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Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
Highlights ► TLP bonding of Al-6061/15%Al2O3p was studied. ► An electrodeposited Ni-coating containing nano-Al2O3p was used as interlayer. ► The effects of bonding temperature on joint properties were investigated. ► Joint strength of 137MPa was achieved at 620°C. ► The main factor affecting the joint strength is particle segregation.
Abstract 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 Al2O3 dispersions into the interlayer can be used to improve joint strength.
Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
Highlights ► TLP bonding of Al-6061/15%Al2O3p was studied. ► An electrodeposited Ni-coating containing nano-Al2O3p was used as interlayer. ► The effects of bonding temperature on joint properties were investigated. ► Joint strength of 137MPa was achieved at 620°C. ► The main factor affecting the joint strength is particle segregation.
Abstract 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 Al2O3 dispersions into the interlayer can be used to improve joint strength.
Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
Cooke, Kavian O. (author) / Khan, Tahir I. (author) / Oliver, Gossett D. (author)
2011-04-26
7 pages
Article (Journal)
Electronic Resource
English
Transient liquid phase diffusion bonding Al-6061 using nano-dispersed Ni coatings
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