Achieving superior strength and elongation from electrically assisted pressure joining of medium entropy alloy and Ti-6Al-4V

Abstract

In the present study, two dissimilar alloys (Ti-6Al-4V and NbTiZr(MoTa)0.1) are joined using electrically-assisted pressure joining. This joining technique can produce components with superior mechanical properties (with a yield strength of ∼980 MPa and elongation of ∼10.5%), ensuring optimal performance under severe operating conditions. A detailed analysis of the joined interface related to phase analysis and mechanical mapping elaborated a strong joint having a high yield strength without any post-heat treatment. The findings of the present study contribute to the broader field of dissimilar metal joining and can serve as a reference for future research and development in the aerospace industry. This study demonstrates the feasibility of achieving strong and ductile solid-state joints between dissimilar alloys.