Semi-solid wire-feed additive manufacturing of AlSi7Mg by direct induction heating

In this study, a novel process is presented in which direct induction heating with frequencies the MHz range used for wire-feed additive manufacturing of alloy AlSi7Mg. The high frequency 1.5 enables processing 1.2 mm diameter wires without need indirect via nozzle. feasibility proven by experimental identification proper window regarding influential parameters such as distance between inductor and substrate, power wire feed rate fabrication single layers. Furthermore, strategy successful multi-layered cubes developed. microstructure exhibits characteristic variation along build direction. Micro-computed tomography to reveal defects like lack fusion spherical pores test cubes. results are derive possible improvements, will allow be fast powder-free alternative metal route future.