The present study examines the influence of process parameters on the effect of
strength and crystalline properties of AlSi10Mg alloy with laser sintered
process. A detailed work was carried out with the effects of varying the laser
power, scan speed, and hatch distance on crystalline structure, hardness, and
surface roughness. From the analysis, the improved surface quality and
mechanical performance were achieved with a scan speed of 1200 mm/s, a laser
power of 370 W, and a hatch distance of 0.1 mm. An increase in hardness,
improved surface finish, and reduced porosity was observed with decreased hatch
distance. However, the balanced results were obtained for scanning speed of 1200
mm/s and laser power of 370 W. The ideal processing conditions decreased the
crystalline size, increasing the overall material strength, when crystalline
analysis was carried out. The higher scanning speeds supported improved grain
refinement and heat diffusion, with the poor hardness value. With the lower
scanning speed below 1200 mm/s, the surface flaws like warping and porosity
result from the excessive laser power.
