Abstract
In this study, a method of introducing an Nb intermediate layer added by tungsten inert gas welding was proposed and used in the fabrication of a crack-free Ti6Al4V/Al6.21Cu bimetallic structure by wire and arc additive manufacturing (WAAM) based on cold metal transfer (CMT) technique. The results showed that the addition of an Nb interlayer between Ti6Al4V and Al6.21Cu could effectively impede the diffusion of Ti and Al elements, thereby inhibiting the formation of Ti-Al brittle intermetallic compounds. The reaction layer composed of Al3Nb was formed at the Al6.21Cu/Nb interface. The average ultimate tensile strength of the Ti6Al4V/Al6.21Cu bimetallic structure with and without Nb interlayer were 120.9 MPa and 94.5 MPa respectively, indicating that the addition of Nb interlayer can significantly improve the mechanical properties of the Ti6Al4V/Al6.21Cu bimetallic structure.
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.
