RT journal article
T1 Sliding wear behavior of UNS R56400 titanium alloy samples thermally oxidized by laser
A1 Vázquez Martínez, Juan Manuel
A1 Botana Pedemonte, Francisco Javier
A1 Botana Galvín, Marta
A1 Salguero Gómez, Jorge
A1 Marcos Bárcena, Mariano
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Ingeniería Mecánica y Diseño Industrial
K1 UNS R56400
K1 laser oxidation
K1 sliding wear
K1 wear mechanism
K1 tribology
K1 hardness
K1 roughness
K1 pin on disc
AB Wear of elements subjected to friction and sliding is among the main causes of lowtribological performance and short lifetime of strategic materials such as titanium alloys. These typesof alloys are widely used in different areas such as aerospace and the biomechanics industry. In thissense, surface modification treatments allow for the overcoming of limitations and improvementof features and properties. In the case of titanium alloys, improvements in the main weaknesses ofthese materials can be obtained. Laser texturing of UNS R56400 (Ti6Al4V) alloy, according to UnifiedNumbering System designation, surface layers in a non-protective atmosphere produces an increaseof the oxides, especially of titanium dioxide (TiO2) species. The presence of oxides in the alloy resultsin color tonality variations as well as hardness increases. In addition, specific roughness topographiesmay be produced by the track of laser beam irradiation. In this research, thermochemical oxidationof UNS R56400 alloy has been developed through laser texturing, using scan speed of the beam (Vs)as the process control variable, and its influence on the sliding wear behavior was analyzed. For thispurpose, using pin on disc tribological tests, wear was evaluated from the friction coefficient, andwear mechanisms involved in the process were analyzed. Combined studies of wear mechanisms andthe friction coefficient verified that by means of specific surface treatments, an increase in the wearresistance of this type of alloys is generated. The most advantageous results for the improvement oftribological behavior have been detected in textured surfaces using a Vs of 150 mm/s, resulting in adecrease in the friction coefficient values by approximately 20%.
PB MDPI
SN 1996-1944
YR 2017
FD 2017
LK http://hdl.handle.net/10498/36521
UL http://hdl.handle.net/10498/36521
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026