Abstract
The use of an additive technology production in an industrial
application opens a new engineering opportunity for structural elements
design. The new production technology allows a new design concept aimed
to gain the weight save, decrease the number of joints in the mechanisms
and other valuable benefits. However, it was reported that mechanical
properties of a 3D printed materials are very sensitive to the external
loading parameters. Nowadays the quasi-static mechanical properties of
the materials obtained by selected laser melting (SLM) technology are
close, or even superior the mechanical properties of traditional
production technologies, while cyclic mechanical properties are still
low. This paper introduces the VHCF properties of the SLM aluminum alloy
AlSi10Mg and hot-rolled aluminum alloy D16T under axial VHCF loading.
The fracture surfaces of both alloys were investigated by scanning
electron microscopy (SEM) to study crack initiation mechanisms and early
crack growth.