Computational modeling and experimental based parametric study of multi-track laser processing on alumina

摘要: Abstract In this work, both heat transfer modeling (COMSOL Multiphysics ® ) and experimental investigations were used to obtain the threshold multiple laser scanning processing parameters (laser power, speed, fill space) for achieving more multi-faceted grains on alumina's surface. An ytterbium doped Nd:YAG (1064 nm) was perform experiments designed conditions such as 32–127×10 6  J/m 2 energy densities with space values of 3–6×10 −4  m. The SEM, EDX wear results quantify effect variables change microstructures (coarse grains, dendrite, grains) obtaining best conditions. By controlling density space, high resistance achieved essential features improving abrasive quality.