Topic:Current Developments in Aluminium Wire + Arc Additive Manufacturing for Aerospace Applications

K.F. Ayarkwa is a PhD researcher in the Welding Engineering and Laser Processing Centre at Cranfield University, Bedfordshire, UK. His main research area lies in wire + arc additive manufacture process development of aluminium alloys and aluminium matrix composites. He obtained his undergraduate and master’s degrees in materials engineering and welding engineering respectively.

Wire + arc additive manufacture (WAAM) is a subject of great interest to current manufacturers due to the potential to produce large components to near net shape at high deposition rates. The process utilises already developed welding techniques such as metal inert gas (MIG) and tungsten inert gas (TIG) welding processes to melt and deposit wire in an additive fashion. This is very critical for aluminium due to the high fusion temperature oxide film which forms on its surface. In this presentation, the current WAAM process variants used in aluminium deposition will be presented. This will consider the effect of WAAM process parameters on oxide cleaning and linear wall dimensions for parts and components to be manufactured.