Optimization of Femtosecond Laser Drilling Process for DD6 Single Crystal Alloy

In this paper, we explore the optimal combination of femtosecond laser drilling parameters for micro-hole processing on DD6 single-crystal high-temperature alloy and analyze significance parameter variations microstructure characteristics holes. The L25(56) orthogonal test was performed by controlling six during ring processing: average power; overlap rate; defocus feed amount; gas pressure; end position. influence factors analyzed ANOVA, were optimized genetic algorithm. Scanning electron microscopy micropores salient features pores analyzed. Finally, calculated extreme differences conducted single-factor effect analysis. We conclude that rate has most significant level hole single crystal alloy; position is smaller than others. are power 6.73 W; 99%, 0 mm; pressure 0.2 MPa; 0.02 mm, −0.4 mm.