20.500.12556/DiRROS-20757 Combining ultrafast laser texturing and laser hardening to enhance surface durability by improving hardness and wear performance Aluminum alloy 7075 is utilized widely across marine, aerospace, and automotive sectors. However, its surface wear resistance has hindered its application in certain tribological environments. Addressing this challenge, the current study examines a hybrid laser method to increase surface wear resistance by combining two techniques: ultrafast laser texturing and laser-based surface hardening. Ultrafast laser processing is conducted using 3 W laser power, 100 kHz pulse repetition rate, 4 mm s-1 scanning speed, and three different scan patterns. After the texturing operation, laser-based surface hardening is then performed on these textures using a continuous wave laser. The laser heat treatment is conducted using laser powers of 400 and 500 W with three different scan speeds of 1, 2, and 3 mm s-1 . Microhardness evaluations show a notable increase in hardness, with the hardest sample exhibiting a 17.8% increase compared to the pristine sample. The lasertextured and laser heat-treated samples exhibit a significant reduction in the average coefficient of friction and wear volumes compared to samples that were laser-textured but not laser heat-treated. The investigated laser processing strategy offers a promising approach for surface modification, enhancing both mechanical properties and wear resistance of aluminum alloy 7075 surfaces. hardness laser hardening parametric modeling surface modification ultrafast laser texturing wear resistance true false true Wiley-VCH GmbH Nemčija Angleški jezik Ni določen © 2024 The Author(s) Neznano 2024-11-05 07:20:21 2024-11-05 07:20:21 2024-11-20 08:19:34 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Opis vira z dne 6. 9. 2024; Št. članka: 2401183; str. 1-15 iss. 20 Vol. 26 Oct. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-10-01 620.1:669.715:621.9.048.7 1527-2648 10.1002/adem.202401183 206576643 RAZ_Cholkar_Abhijit_2024.pdf RAZ_Cholkar_Abhijit_2024.pdf 1 BC8E7A772D665BCBD4E49B89FC53A57A f12d44768cd5b7c72ac41edb7d162a9376f890429cbd4181ab4eaec86e3bd956 519f82c6-9b40-11ef-89f3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29292 https://onlinelibrary.wiley.com/doi/10.1002/adem.202401183?af=R 1 09ef74d9-9b3e-11ef-89f3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29291 Inštitut za kovinske materiale in tehnologije 0 0 0