Impact of selected Heat-Treatments on Strength & Ductility of LPB-F SilmagAl-AlSi7Mg0.6

Tuesday, April 11, 2017: 8:30 AM
Room 6 - 7 (Charleston Area Convention Center)
Mr. Frank Palm , Airbus Group Innovations, Munich, Germany
Mr. Magnus Ahlfors , Quintus Technologies AB, Vasteras, Sweden
Mr. Dominik Bauer , Airbus Group Innovations, Munich, Germany
Mr. Laurenz Ploechl , Quintus Technologies AB, Vasteras, Sweden
AlSi7Mg0.6 is a very popular premium investment cast Al material in aerospace & defense engineering which offers a convincing combination of strength, ductility & durability combined with good corrosion resistance. Hence it´s as well an attractive alloy choice for laser powder-bed fusion (LPB-F) additive manufacturing. The principle micro-structure mechanism which are dominating the alloy strength evolution after layer-wise built-up in a powder-bed platform are decoded as an “particle reinforcement (MMC) effect” caused by primary solidification of nano-sized Si particles in combination with classical precipitation hardening via Mg2Si coherent phases (already presented on AEROMAT2016, Bellevue, WA). In a joint project Quintus Technologies AB and Airbus Group Innovations have investigated heat treatment optimizations & tailoring in order to improve the strength – ductility portfolio of above mentioned alloy. Strength and micro-structures using different heat treatment concepts (including a new Quintus Technologies AB HIP approach) data will be presented and discussed

See more of: Additive Manufacturing II
See more of: Technical Program