Figure15: Effect of the Laser Parameter on the Melt pool Width (a) AlCoCrFeNiCu HEA (b) AlTiCrFeCoNi HEA
At an energy density 50 J/mm, the melt pool width using the above equation gives the value of 4197.83 μm. Consequently, the melt pool width, melt pool depth and bead height can be estimated at a particular energy density using the equation above. However, no particular pattern was observed with the melt pool depth in Figures 16. Some samples had more contacts than others with the melt pool, which decreases with an increase in energy density and reduction in scanning speed. Comparing Figures 17(a) and (b), the bead height decreases with an increase in energy density attributed to higher intensity of the laser beam causing a high volume of melting and deeper dilution of the alloys with respect to a constant powder flow at a higher energy density [12, 101].