Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Designed Materials by Additive Manufacturing - impact of exposure-strategies and -parameters on material characteristics of AlSi10Mg processed by Selective Laser Melting

Material Design by Additive Manufacturing - impact of exposure-strategies and -parameters on material characteristics of AlSi10Mg processed by Selective Laser Melting
 
: Pfaff, Aron; Jäcklein, Martin; Hoschke, Klaus; Wickert, Matthias

:
Fulltext (PDF; )

Deutsche Gesellschaft für Materialkunde -DGM-:
LightMAT 2017, 2nd Conference & Exhibition on Light Materials - Science and Technology with the special Symposium ECAA. Online resource : 08. - 10. November 2017, Bremen, Germany
Online im WWW, 2017
https://lightmat2017.dgm.de/program/submitted-documents/
3 pp.
International Conference on Light Materials - Science and Technology (LightMAT) <2, 2017, Bremen>
European Conference on Aluminium Alloys (ECAA) <2017, Bremen>
English
Conference Paper, Electronic Publication
Fraunhofer EMI ()
grain size; melt pool dimension; structured material

Abstract
The metal processing Additive Manufacturing technology Selective Laser Melting(SLM) offers a high design freedom regarding the geometry as well as the processing of the material. The local application of an intense laser beam causes an exceptional microstructure, which can achieve higher mechanical properties than conventionally manufactured equivalents. The material is created incrementally in sections and layers that are processed with different strategies and distinct parameter sets. Designed Materials can be generated by varying the manufacturing parameters and exposure strategy to induce a gradient or a local change of properties by designing the microstructure. They can also be created by changing the topology of the material on a micro-, meso-, macro- scale or on multiple scales at once. This enables the creation of material types like Functionally Graded Materials (FGM), Metamaterials or other Designed Materials. To produce such materials by SLM, it is necessary to gain a detailed understanding about the influence of the manufacturing parameters. Experimental studies have been carried out to investigate the fuse rate and microstructure in regard to the exposure parameters. Based on the results, parameter sheets have been derived, which support the process of finding optimized parameter sets for a specific purpose. General methods and their ability to influence the material structure and properties were tested and evaluated. Furthermore, the resulting change of the microstructure has been analyzed and first Graded Materials were generated and analyzed to show the potential and possibilities for Designed Materials on multiple scales by Selective Laser Melting.

: http://publica.fraunhofer.de/documents/N-487162.html