Location and orientation dependent Properties in large-scale structures made by metal AM
The need to fabricate and repair large-scale structures in forward deployment capacities is of extreme importance for future space and terrestrial missions. As such, welding-derived metal AM technologies such as wire+arc additive manufacturing (WAAM) have been created to meet this need. The benefits of WAAM compared to the more common laser powder bed fusion techniques are numerous including the ability to manufacture and assemble components greater than 300 mm in height under microgravity conditions, mechanical properties comparable to wrought materials in the as-built condition, and >200% higher build rates. However, the process-structure-property relationships for wire-feed AM materials and structures are not well-known which currently precludes significant advances in employing this technology as a viable tool for manufacturing and repair of mission critical structures.