Journal of Materials and Engineering Structures
Volume 10, Numéro 3, Pages 415-422
2023-09-30
Studies On Hardness And Tensile Testing Of Alsi10mg Produced By Selective Laser Melting
Authors : Suresha S . Subramanya Raghavendra .
Abstract
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.
Keywords
Selective Laser Melting ; Additive Manufacturing ; Aluminium ; Tensile strength
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