Anisotropy and mechanical properties of dissimilar Al additive manufactured structures generated by multi-layer friction surfacing

• DOI: 10.1007/s00170-022-10685-3
• Publication Date: 2023-01-17T10:37:12Z
• Authors: Lars Rath; Zina Kallien; Arne Roos; Jorge F. dos Santos; Benjamin Klusemann
• Keywords: Deposition

Abstract Friction surfacing (FS) is a solid-state layer deposition process for metallic materials at temperatures below their melting point. While the bonding of deposited layers to substrate proven suitable coating applications, so far mechanical properties additively manufactured stacks have not been systematically investigated. In particular, effect successive FS layers, i.e., repetitive thermo-mechanical loading, on interface as well anisotropy and strength stack unknown. For this purpose, multi-layer from dissimilar aluminum alloys investigated, characterizing layer-to-layer layer-to-substrate interfaces via micro-flat tensile testing. Furthermore, directional dependencies in failure mechanisms are analyzed. The results show homogeneous, fine-grained microstructure with average grain sizes between 4.2 4.6 μ m within material. resulting no significant dependency present an ultimate 320 326 MPa exceeding AA5083 H112 consumable base No difference was obtained terms or strength. homogeneous hardness observed structure, which range material’s 91 HV. indicate that conjunction material used generated structures highlight potential technology.