Abstract
The Additive Manufacturing process, namely the Laser Powder Bed Fusion, enables the 3D printing of components in Aluminum alloys, such as AlSi10Mg. The Aluminum alloys are widely used in aeronautical and automotive industries, whereby it is fundamental the understanding of in-service fatigue behavior. As it is well known the geometrical discontinuities generate stress concentrations that have impact in the fatigue life of the components. In this sense, this work pretends to study the fatigue of notched and unnotched samples of AlSi10Mg manufactured by LPBF under variable loading amplitudes, once most of in-service components are subjected to both these effects. The best achievements of this work were the following: the applied heat treatment generates a better performance for high cycle fatigue for both cases. Some fatigue life prediction models based on the accumulated damage were applied obtaining a good agreement with the experimental results.
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