Influence of in situ micro-rolling on the improved strength and ductility of hybrid additively manufactured metals

Hybrid in situ rolled wire + arc additive manufacturing (HRAM) is a novel printing technology capable of fabricating large-scale components by combining in situ micro-rolling with standard wire + arc additive manufacturing (WAAM), which enhances the ductility and tensile strength of the resulting parts. This study attempts to identify the aspects of the microstructure that are critical to the property improvement. The microstructure of the WAAM-...