Evaluation on diffusion bonded joints of TiAl alloy to Ti3SiC2 ceramic with and without Ni interlayer: Interfacial microstructure and mechanical properties

Microstructure evolution and brazing mechanisms of the Ti2AlC/Ni joints using nickel based filler alloy

“…Therefore, the 'interaction zone' might act as the transition layer and reduce the thermal stress, accounted for the increasing shear strength when the holding time extended from 15 min to 30 min. This supposition was in good agreement with the result proposed by Liu [26]. However, when brazed at 1050 • C for 60 min, quantities of Ni from filler alloy diffused into the Ti 2 AlC substrate and the Ni content in the brazing filler decreased, led to better fluidity of the brazing filler.…”

Deformation behavior and microstructural evolution of directionally solidified TiAlNb-based alloy during thermo-compression at 1373–1573K

“…TiAl-based alloys have received much attention from the material researchers due to their higher service temperature and excellent high-temperature mechanical properties [1][2][3]. Comparing with Mgbased, Al-based, Ti-based and Ni-based alloys, its service temperature is much higher about 600-1000°C, and the density is only around 4.3 g/cm 3 after heavy alloying.…”

Recent Progress in the Joining of Titanium Alloys to Ceramics

“…Liu et al [50] evaluated the diffusion bonding of TiAl alloy to Ti 3 SiC 2 ceramic with and without a Ni interlayer. The bonding was conducted in the temperature range from 950 to 1100 • C, for 60 min under a pressure of 30 MPa.…”

“…The successful application of these advanced ceramics depends strongly on the joining of these materials with metals. In addition, the possibility to combine properties as high wear resistance and high thermal stability with low density, high temperature properties, and excellent creep and corrosion resistance could enable the production of more advanced components that better meet the high requirements of several industrial sectors [21].The most suitable methods for bonding metals and ceramics and producing successful joints with appreciated properties are brazing , diffusion bonding [43][44][45][46][47][48][49][50][51][52][53][54][55] and transient liquid phase bonding [56,57]. All these processes present advantages and disadvantages in dissimilar joining between titanium alloys and ceramics and its selection will depend on the application.…”