Femtosecond laser processing of advanced technical materials

Ultra-short pulsed laser ablation may be used for high-precision machining with very low thermal influence on the processed materials. Due to this reason, lasers are increasingly processing of advanced materials, such as titanium alloys, nickel-based alloys or steel, every year. In study, four technical materials were analysed and compared under femtosecond irradiation three different wavelengths. The main laser-material interaction parameters identified, namely threshold removal efficiency parameters. Higher rates found Ti6Al4V alloy all harmonic To increase process productivity, a method increasing repetition rate scanning speed was presented. With maximum rate, productivity increased five-fold similar removed depth surface quality. Finally, suitability identified regard quality demonstrated fabrication two complex structures – honeycomb dot which has potential improve friction properties