Microstructure and electrochemical properties of the bonding zone of AISI 316L steel joined with a Fe-based amorphous foil

Mechanical properties of AISI 316L stainless steels joined with a commercial Ni based amorphous foil

“…Such diffusion of elements increases as both joining temperatures and times raise [5]. In addition, the change of form of the precipitate particles created in the BMF15m foil, i. e. from polyhedral to needle form might also add some strength to the joints since they may act as a barrier during the shear-tensile mechanical test.…”

“…In addition, the amorphous nature of these alloys prevents the presence of stacking faults, dislocations, grain boundaries, and other defects related to crystalline alloys. In this sense, Ni, Mg, Zr, Cu, Pd and more recently Fe-based amorphous foils have been used for joining Inconel 718 to Inconel X-750, Ti-based biomedical alloys, ceramic matrix composite to titanium metal and AISI 316 L stainless steel to itself, respectively [2][3][4][5]. On the other hand, it is well known that the surface roughness of the materials to be joined plays an important role on the bonding strength of the joints, mainly when the bonding process is in the liquid state of the filler element [6].…”

Diffusion Bonding and Transient Liquid Phase (TLP) Bonding of Type 304 and 316 Austenitic Stainless Steel—A Review of Similar and Dissimilar Material Joints

“…If the sample geometry allows it, parts can also be press-fitted and put under pressure into a vacuum furnace where they are then diffusion bonded when the temperature is increased [68][69][70]. If no relevant pressure was applied [67,[71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87], the experiments were not reported here since we considered them brazing rather than diffusion bonding using the definitions introduced earlier. In brazing some pressure is often applied to fix the parts so that a definition between brazing and TLP bonding that only relates to applied pressure is not sufficient.…”

Corrosion resistance of bonding zone of AISI 316L–304 stainless steels joined with iron based glass ribbon interlayer: microstructural effects

“…4,5 In the last mentioned case, the joining processes of AISI 316L SS at 1173 K took place by self-diffusion bonding in solid state, whereas at 1273 K liquid state, diffusion could take place partially forming some precipitate particles composed mainly of s phase. 5 Generally speaking, amorphous metallic alloys present higher corrosion resistance than crystalline counterparts with similar elemental composition, since they have no grain boundaries or crystalline defects that could act as corrosion initiation sites. These alloys are used extensively in areas where resistance to both wear and corrosion is needed.…”

“…Moreover, the amorphous nature of these alloys prevents the presence of dislocations, stacking faults, grain boundaries and other defects related to crystalline alloys. In this sense, nickel, magnesium, zirconium, copper, palladium and, more recently, iron based amorphous foils have been used for joining Inconel 718 to Inconel X-750,2 Ti based biomedical alloys,3 ceramic matrix composite to titanium and AISI 316L stainless steel (SS) to itself 4 4,5. In the last mentioned case, the joining processes of AISI 316L SS at 1173 K took place by self-diffusion bonding in solid state, whereas at 1273 K liquid state, diffusion could take place partially forming some precipitate particles composed mainly of σ phase 5.…”