Bulk-like ductility of cold spray additively manufactured copper in the as-sprayed state
Reeti Singh, Ján Kondás, C. Bauer, Jan Čížek, Jan Medřický, Štefan Csáki, Jan Čupera, Radek Procházka, Daniel Melzer, Pavel Konop.ík
Abstract
In recent years, cold spray process is increasingly used for additive manufacturing of metallic components, referred to as cold spray additive manufacturing (CSAM). Unlike the fusion-based AM processes, CSAM is achieved in a solid-state, bringing several advantages such as the absence of severe oxidation or phase composition changes. At the moment, the main limitation of CSAM is the generally low ductility of the as-sprayed deposits. In this paper, using Cu as a model material, we demonstrate a way to overcome this limitation. Importantly, a high ductility of the deposits in their as-sprayed state is achieved without a trade-off in mechanical strength. Furthermore, we show that without any post-heat treatment, the properties of CSAM Cu are comparable to bulk, non-AM Cu.