Akademik Veri Yönetim Sistemi
6th International Conference on Engineering and Applied Natural Sciences, Konya, Türkiye, 23 - 24 Haziran 2025, ss.119-128, (Tam Metin Bildiri)
Laser texturing provides a lubricant-free means to tailor the tribological response of Ti6Al4V,
but quantitative process–response maps remain limited. In this study, flat coupons were patterned with a
100 W fibre laser using a full-factorial matrix covering hatch 75–300 µm, power 10–40 W and speed
500–2000 mm s⁻¹. Dry reciprocating sliding tests were conducted at 10 N, 1 Hz and 20 m against a 6 mm
steel ball under ambient laboratory conditions. Surface morphologies were captured by non-contact laser
profilometry at 20 µm lateral resolution and analysed in Mountains 6.2, ensuring sub-micrometre
accuracy for depth and width statistics . Profilometry revealed grooves 0.76–1.02 mm wide and 12–26
µm deep, the most aggressive setting (150 µm, 30 W, 2000 mm s⁻¹) deepening penetration by 115 % over
the mildest (300 µm, 20 W, 1500 mm s⁻¹) . ANOVA assigned 23.4, 16.9 and 9.8 % of scratch-depth
variance to scanning speed, hatch and power, respectively, while 56 % of width scatter stemmed from
unmodelled interactions . Although individual factors lacked statistical significance, increasing linear
energy density preferentially enlarged depth, whereas geometric constraints limited width. This study
therefore delivers the first parameter envelope linking fibre-laser texturing to quantified reciprocating
wear metrics for titanium under identical conditions. Future work should incorporate higher-order
designs, real-time friction mapping and microstructural correlative analyses to optimize surfaces for
demanding aerospace and biomedical applications worldwide.