The production principle of all additive manufacturing technologies leads to an anisotropic microstructure because the products, with this principle, consists of parallel layers. Since the interface between the layers of the layered structure has different properties then the material within layers, all the mechanical properties of the products of additive manufacturing technologies are anisotropic to some extent.
This page represents the introductory page to the sections that present influence of particular production conditions (“Build orientation” and “Position with respect to inert gas flow”) to their fatigue performance.