Abstract
Aluminum alloys are key materials in additive manufacturing (AM) technologies thanks to their low density that, coupled with the possibility to create complex geometries of these innovative processes, can be exploited for several applications in aerospace and automotive fields. The AM process of these alloys had to face many challenges because, due to their low laser absorption, high thermal conductivity and reduced powder flowability, they are characterized by poor processability. Nowadays mainly Al-Si alloys are processed, however, in recent years many efforts have been carried out in developing new compositions specifically designed for laser based powder bed AM processes. This paper reviews the state of the art of the aluminum alloys used in the laser powder bed fusion process, together with the microstructural and mechanical characterizations.
Highlights
Additive manufacturing (AM) defines a class of production technologies that can create 3D components layer by layer based on 2D patterns defined by slicing the 3D computer aided design components layer by layer based on 2D patterns defined by slicing the 3D computer aided design(CAD) of the component
These results suggested that laser powder bed fusion (LPBF) may be considered a rapid solidification process (RSP)
This review aims to demonstrate the strong interest and the great possibilities related to new alloys development designed for aPdudbiltiisvheedm: 2a7nuMfaarccthur2i0n1g9 (AM) processes, and in particular Al alloys for LPBF
Summary
Additive manufacturing (AM) defines a class of production technologies that can create 3D components layer by layer based on 2D patterns defined by slicing the 3D computer aided design components layer by layer based on 2D patterns defined by slicing the 3D computer aided design. Among the different AM technologies, powder bed technologies such as (CAD) of the component. Among the different AM technologies, powder bed technologies such as laser powder bed fusion (LPBF) and electron beam melting (EBM) are the most used to process laser powder bed fusion (LPBF) and electron beam melting (EBM) are the most used to process metallic metallic alloys [1].
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