RT journal article
T1 Effects of Laser Processing Parameters on Texturized Layer Development and Surface Features of Ti6Al4V Alloy Samples
A1 Vazquez Martinez, Juan Manuel
A1 Salguero Gómez, Jorge
A1 Batista Ponce, Moises
A1 Botana Pedemonte, Francisco Javier
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Ingeniería Mecánica y Diseño Industrial
K1 surface engineering
K1 laser texturing
K1 thermal oxidation
K1 Ti6Al4V
K1 surface characterization
AB Surface engineering is widely used in different areas, such as the aerospace industryor the biomechanical and medical fields. Specifically, laser surface modification techniques mayobtain specific surface finishes for special applications. In texturing laser procedures, the control ofprocessing parameters has a great influence on the geometry and characteristics of the treated area.When these processes are carried out on titanium alloys, thin oxide layers are usually developed onthe irradiated surface, formed through the thermochemical combination of vaporized material withatmospheric oxygen in the air. In thermal oxidation treatments of Ti6Al4V, the highest concentrationof oxides is mainly composed by rutile (TiO2), producing surface property modifications such ashardness, among others. In this research, a thermochemical oxidation of Ti6Al4V alloy has beenperformed through laser texturing, using laser scanning speed (Vs) and pulse rate (f ) as processcontrol variables, and its influence on the beam absorption capacity of the modified layer have beenanalyzed. Combined evaluations of microgeometrical features and mechanical properties, suchas hardness, verified that, by means of laser texturing treatments, the ability to generate specifictopographies and increase the initial hardness of the alloy is obtained. The most advantageous resultsfor the increase of hardness by thermochemical oxidation have been detected in low scan speedsof laser beam treatments, resulting in an increase of approximately 270% using a scanning speedof 10 mm/s. On the other hand, a dependence between roughness values, in terms of Ra and Rz,and the energy density of pulse (Ed) has been observed, showing higher values of roughness for a17.68 J/cm2 energy density of pulse.
PB MDPI
SN 2079-6412
YR 2017
FD 2017-12-22
LK http://hdl.handle.net/10498/34661
UL http://hdl.handle.net/10498/34661
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026