Diffusion bonding of iron aluminide Fe72Al28 using a pure iron interlayer

Diffusion bonding of nickel aluminide Ni75Al25 using a pure nickel interlayer

“…The chemical compositions of the nickel interlayer, the bond interface and the matrix were determined using energy dispersive spectroscopy (EDS). Microhardness values were measured on both sides of the bonded samples by means of Vickers indenter with a load of 100 g. A specially testing apparatus was designed to determine bond shear strength of the small bonded samples [11]. Bonded samples were inserted in the testing apparatus and the testing apparatus was placed on a tensile machine with a full load of 40 kN.…”

“…Interlayers are used to minimize or eliminate problems caused by specific or metallurgical characteristic of metals to be joined. Interlayers can be applied in many forms as electroplated welded surfaces, as foil inserts, as evaporated or sputtered coating and even as powdered fillers [6,11].…”

“…In another study, the author and his coworkers produced an iron interlayer by means of electrolytic coating on a series of Fe 72 Al 28 alloy samples. After the welding process, microstructures and mechanic properties of the bonded samples for different times were investigated and good results were obtained [11].…”

Infrared brazing Fe3Al intermetallics using the Cu filler metal

“…The development of appropriate joining process is crucial for structural applications of most intermetallic compounds because of their inherent brittleness at room temperature [6,7]. Welding and diffusion bonding have been successfully applied in joining intermetallic compounds [7][8][9][10].…”

“…Welding and diffusion bonding have been successfully applied in joining intermetallic compounds [7][8][9][10]. The Fe 3 Al-type alloy was welded by tungsten inert gas welding (TIGW) without any cracks [10].…”