Abstract
The joining experiments are carried out with heating temperature 920 "C for dwell time 5 rain on cubic boron nitride (CBN)abrasive grains and 0.45%C steel by using silver-copper-titanium(AgCuTi)alloy as brazing filler.The interracial microstruc- ture and newly-formed phases are detected with scanning electron microscope(SEM),energy dispersion spectrometer(EDS)and X-ray diffraction(XRD).The results show that the delamination phenomenon in the interfacial layer takes place during brazing.From CBN grain to the filler,the interfacial region is composed of a transitional layer,i.e.CBN/TiB_2/TiB/TiN/Ti contained allay,which has the remarkable advantage in improving the performance of the brazed joint.The interracial compounds could be formed in virtue of the displacement reaction according to the thermodynamic analysis.Meanwhile,the formation sequence of the reaction products(TiN, TiB_2,TiB)is determined by the difference in the diffusion behavior of B and N atoms.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
