POST PROCESING OF AM-SLM AlSi10Mg SAMPLES: MECHANICAL PROPERTIES AND FRACTURE BEHAVIOR

Eitan Tiferet ¹ Idan Rosenthal ² Moshe Ganor ¹ Adin Stern ²

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

Mechanical properties and fracture behavior of additive manufactured AlSi10Mg specimens were investigated. The samples were manufactured utilizing powder-bed process with Selective Laser Melting and underwent machining afterwards. Samples were tested in the as-built condition, as well as after stress relief heat treatment at two temperatures (573K and 813K); six samples were tested after Hot Isostatic Pressing (HIP) treatments at two temperatures (600K and 800K) under a 100MPa isostatic pressure. Post-processing treatments have a profound effect on the overall mechanical properties. HIP treatments show a trend of an inverse relation, the increase in HIP temperature leads to a decrease in tensile strength. Also, elimination of porosity and significant increase in elongation were observed after the HIP treatment.