Abstract
The process of selective laser melting (SLM) of an Al-Si-Mg-Cu powder composite with the addition of quasicrystal reinforcements under conditions of a limited powder amount was investigated. The morphology and microhardness of the obtained scan single tracks were discussed, and the optimal sintering parameters were found to be in the Linear Energy Density (LED) range 0.21-0.30 J/mm. The following SLM parameters: P = 370 W and v = 1650 mm/s given the optimal characteristics of scan single tracks geometry with less defects. The obtained composites exhibited an improved hardness with the highest values of 235 HV with the 8% of reinforcements in the powder mixture.
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