WELDABILITY OF AlSi10Mg -ADDITIVE MANUFACTURING PARTS BY ELECTRON BEAM WELDING - PRELIMINARY RESULTS

Moshe Nahmany ^1,2 Meital Kamilyan ¹ Idan Rosenthal ¹ Isgav Benishti ² Nachum Frage ¹ Adin Stern ¹

¹Materials Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva
²Materials Department, Nuclear Research Center Negev, Beer-Sheva

Electron Beam Welding (EBW) is a well established welding technique, resulting in a narrow heat affected zone (HAZ) due to an ability to deliver high-density-energy beam to the workpieces. Such high-density-energy beam results in minimal metallurgical changes in the workpieces. Additive Manufacturing Selective Laser Melting (AM-SLM) of metals is a relatively new method and still has size limitations of the printed parts.

The present work investigates EB welded AlSi10Mg samples, produced by the AM-SLM method, focusing on the effect of EBW parameters and characterization of the joint macro- and microstructure, as well as micro-hardness.

The results show for the first time the feasibility of the EBW technique for AM-SLM specimens.

Key words: EBW, AM, SLM, AlSi10Mg alloy