Interfacial reaction products formation in the diffusion bonded joints made between Ti-6Al-4V and AISI 304L with brass interlayer

摘要: Abstract In the diffusion bonded (DB) joints, two interfaces exist, one between base metal Ti-6Al-4 V and brass interlayer, second interlayer AISI 304L stainless steel. The interfacial reaction products formed at were examined with optical, scanning electron microscope (SEM), energy dispersive X-ray diffraction analysis (EDAX). Diffusion bonding experiments carried out in temperature range of 800–850 ⁰C an interval 25 ⁰C, holding time 60, 90 120 min, under pressures 4 8 MPa. Maximum tensile strength 218 MPa was realised for samples processed 850 60 min, At interface T-6Al-4 V maximum hardness values 548.2 VHN realized sample ⁰C. XRD performed fracture site, indicated presence intermetallic compounds such as CuTi, CuTi2, Cu5Zn8, Fe22Zn78, gamma (ϒ) sigma (σ) phases pure ‘Cu’.