Diffusion Bonding of TA15 and Ti2AlNb Alloys: Interfacial Microstructure and Mechanical Properties

Formation Mechanism of Dilute Region and Microstructure Evolution in Laser Solid Forming TA15/Ti2AlNb Dual Alloy

“…Recent research focused on Ti 2 AlNb in the context of selecting suitable alloys and integral formation that satisfy requirements for the low weight and working temperature of structural materials in the aerospace industry. The fabrication of a TA15/Ti 2 AlNb dual alloy is feasible [8,9], since Ti 2 AlNb intermetallic alloys can be used at the windward side of the rudder wing on an aerospace craft, where it is exposed to high working temperatures, while TA15 can be utilized at the positions where the working temperature is lower to decrease the total weight of the component.…”

Microstructure evolution and interface characteristics of diffusion bonded dissimilar titanium alloys

“…Titanium alloy parts fabricated by diffusion bonding associated with superplastic forming (SPF/DB) like engine blade and honeycomb panel have been successfully serviced in aircraft [10]. To date, the microstructure evolution, interface characteristics, and mechanical properties of dissimilar titanium alloys fabricated by diffusion bonding have been studied [11][12][13][14][15]. Complex interface microstructure with tens of microns thickness can form in the diffusion bonding of Ti2AlNb/TA15 [13] and Ti2AlNb/TC4 titanium alloys [14].…”

“…To date, the microstructure evolution, interface characteristics, and mechanical properties of dissimilar titanium alloys fabricated by diffusion bonding have been studied [11][12][13][14][15]. Complex interface microstructure with tens of microns thickness can form in the diffusion bonding of Ti2AlNb/TA15 [13] and Ti2AlNb/TC4 titanium alloys [14]. However, the unmixed interface is also observed in the IOP Publishing doi:10.1088/1757-899X/1270/1/012117 2 diffusion bonding of dissimilar TC4/TA15 [15], TC4/Ti55 [12], and TC4/TC17 titanium alloys [11].…”

Dissimilar diffusion bonding behaviour of Ti2AlNb alloy and TiBw/Ti64 composites using the Ti interlayer

“…For example, Zhu et al [18] successfully bonded Ti 2 AlNb with Ti64 alloys using DB and obtained strong joints with layered microstructure by optimising the bonding parameters. Besides, Li et al [19] obtained joints with a tensile strength of 921 MPa between Ti 2 AlNb and TA15 alloys using DB. It can be observed that DB is widely used in joining alloys, composites, and ceramics [20][21][22].…”