Cold spray is a technique that accelerates powder particles towards a substrate using a supersonic compressed gas jet. Upon impact, the particles travelling at high velocities (200 to 1000m.s-1) experience extreme and rapid plastic deformation. They stack up to form a solid state deposit that is well bonded to the substrate and free of oxides (disturbed at impact).
In wire-feed AM, a metal wire is used as supply material to build components – typically large ones of moderate complexity. Depending on the energy source used for deposition, wire-feed AM can be classified into three groups: wire and laser additive manufacturing (WLAM), electron beam freeform fabrication (EBF3) and wire and arc additive manufacturing (WAAM) [1, 2].
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