| Popis: |
AlSi alloys have a wide range of applications in the Additive Manufacturing area, including automotive, aerospace, and residential industries. Despite their appealing mix of mechanical qualities, high heat conductivity, and low weight, they are more difficult to treat by Selective Laser Melting due to their high reflectivity and heat conductivity. In this work, samples were exposed to heat treatment at temperatures of 400°C, 500°C, and 550°C and an artificial ageing treatment for 180°C for 12h, to control the mechanical behaviour of selective-laser- melting (SLM)-produced AlSi10Mg alloys, after which material properties such as tensile strength and hardness were evaluated. The highest tensile and yield strengths are shown by the as-built SLM specimens, which have values of 432.45 and 322.76 MPa. On the other hand, the lowest tensile and yield strengths are shown by the solution heat-treated specimens, which have values of 168.11 and 90.52 MPa. Similar to as-built SLM specimens, the highest hardness value measured was 132.55Hv1. |
