Interfacial microstructure and joining properties of TiAl/Ti3AlC2 diffusion bonded joints using Zr and Ni foils as interlayer
作者： Jiakun Liu , Jian Cao , Xingtao Lin , Haiyan Chen , Jun Wang
DOI: 10.1016/J.VACUUM.2013.10.024
关键词: Intermetallic 、 Microstructure 、 Direct shear test 、 Ceramic 、 Shear strength 、 Metallurgy 、 Materials science 、 Shear strength test 、 Transgranular fracture 、 Diffusion bonding
摘要: Abstract Diffusion bonding of TiAl intermetallic to Ti3AlC2 ceramic was carried out using Zr and Ni foils as interlayer. The interfacial microstructure joining properties were characterized by electronic microscopy investigation shear strength test, respectively. observations revealed that the general joint bonded at 850 °C consisted γ-TiAl + τ3-Al3NiTi2, τ3-Al3NiTi2, τ4-AlNi2Ti, τ4-AlNi2Ti + Ni10Zr7, Ni7Zr2, Ni5Zr, Ni, Ni3(Al,Ti), Ni3(Al,Ti) + Ti3AlC2 from Ti3AlC2. temperature had a great influence on diffusion reaction with other elements, generating different morphology joints. test results showed maximum reached 103.6 MPa. Fracture occurred along substrate adjacent interface, showing brittle intergranular transgranular fracture mode.
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