DYNAMIC PROPERTIES OF AlSi10Mg ALLOY FABRICATED BY SELECTIVE LASER MELTING (SLM)

Additive Manufacturing (AM) by Selective Laser Melting (SLM) is a process for the fabrication of complex components using a metal powder that undergoes melting and fast solidification. The heating achieved by focused intense laser beam. This manufacturing technique has attracted significant attention due to its many advantages, such as short-time production of complex and customized structures, fine microstructure and improved mechanical properties. One of the materials successfully fabricated by AM-SLM is AlSi10Mg alloy, which widely used as structural parts. Static properties of the AM-SLM-processed AlSi10Mg alloy were widely investigated. The information about dynamic properties of the alloy is very limited. In the present study dynamic properties of the AM-SLM AlSi10Mg alloy were investigated by Split Hopkinson Pressure Bar (SHPB), which is a standard experimental approach to obtain stress-strain curves for the . It was established that experimental stress-strain curves depend on the building direction. The samples built in X direction display higher percentage of ellipticity after loading than the samples built in the Z direction. The later reflect inhomogeneous microstructure of the samples built in X direction. Heat treatments of the alloy lead to the improved dynamic properties.