Research progress in arc based additive manufacturing of aluminium alloys – A review

Abstract

Wire arc additive manufacturing (WAAM) created aluminium alloy components are in high demand across a wide range of industries. The WAAM deposits are weakened by the non-uniform thermal cycles that they encounter. In order to successfully use WAAM components in various industries, high-quality, defect-free components are required. Therefore, close control over the process and post-process variants favour defect-free deposits with promising properties. Hence, the current review article delineates the influence of different process and post-process variants on metallurgical characteristics and mechanical properties of WAAM processed aluminium alloys. This article has three sections. The first section briefly introduces Additive Manufacturing (AM) techniques, classification, and benefits. The second section focuses on the WAAM of aluminium alloys, process and post-process variants, and their influence on metallurgical and mechanical characteristics. The final section provides possible scientific solutions to address the challenges associated with WAAM processed aluminium alloys.