3D printing in metal

Furnace cleaner: When the printer is finished, large quantities of metal powder are left behind – and must be carefully removed. Photo: www.siemens.com/press

Additive manufacturing (AM) also known as 3D-printing, is a relatively new production method that allows the manufacturer to automatically create components directly from a CAD-model.

Additive manufacturing is a relatively new production method that allows the manufacturer to automatically create components directly from a CAD-model. The technique also enables new design concepts since components with extremely complex geometries can be manufactured easily. During powder bed processes, a product is formed by selectively melting successive layers of powder by the interaction of a laser or electron beam. The mechanical properties of AM-components can differ substantially from the properties of the same component produced by conventional techniques. This is due to the inherent complexity of the AM-methods and the large quantity of process parameters such as layer thickness, energy density, scan strategy, scan speed, preheating temperature. To be able to introduce AM for critical and highly loaded metallic products, a deeper understanding of how the AM process influence for example the fatigue and damage tolerance needs to be established. 

We at Linköping University are mainly interested to study the performance of AM materials used in demanding applications within the aerospace and gasturbine industries. 

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