An Experimental Investigation of Dimple-Texturing on the Tribological Performance of Hardened AISI H-13 Steel

Abstract

The fabrication of dimple-texture is essential for reducing friction and wear in frictional interaction pairs. The tribological characteristics of the frictional interaction pairs can be improved by controlling the dimple pattern, the depth to diameter ratio, and the area density ratio. In this study, the tribological characteristics of tungsten carbide discs with various dimple-texture patterns and hardened AISI H-13 steel pins are tested experimentally using a pin on disc wear tester to identify the wear mechanism. Laser marking technology was utilized to fabricate the dimple-textures such as circular arrays of the honeycomb pattern and spherical dimple-texture pattern with varying area density ratios. The impact of dimple-texture patterns is examined experimentally under dry testing conditions. Dimple-textured surfaces have a positive influence as compared to non-textured smooth surfaces. Particularly, the spherical dimple-textured pattern reduces frictional coefficient and wear rate by 45% and 51%, respectively, compared to non-textured smooth surfaces. The dimple-texture pattern and area density ratio control are essential features in dimple-texturing.

Effect of Laser-Textured Surface of Ti6Al4V on Frictional Wear Behavior

“…Similarly, the laser textured Ti6Al4V by dimple pattern with a density of 5%, with a combination of laser synthesized, revealed the lowest mass loss values, and the wear rate decreased by 20% to 26.6% compared to the untextured surfaces [9]. The study from Vignesh and Barik [10] on AISI H-13 steels was also resulting an improvement of COF and WR by 45% and 51%, respectively. Sadeghi et al [11] revealed that the lower friction coefficient is due to the contact surface that led to enhanced destruction and wore on the surface of the Ti6Al4V surface.…”

“…The width of the crater (W1-W2) is 90 μm, while the depth of the crater (P1-D1) is 230.49 μm, and the measurement profile from peak to peak (P1-P2) is 50 μm. The laser textured area density (TAD) is the ratio of the textured area from the whole area of a grid [10]. From the laser parameter that had been used in this work, the TAD is 50%.…”

Study on the Reduction of Residual Stress in Laser Cladding Layers through Groove Texture

“…With the accessibility of microfabrication techniques in recent years, surface texture technology has effectively promoted the flourishing development of tribology [19][20][21]. Many scholars have analyzed the application effects and development potential of surface texture in various aspects such as reducing friction and wear, lubricating, reducing resistance, and extending anti-corrosion life on friction surfaces [22,23]. PEI et al [24] employed finite element methods to study the impact of nine surface textures on the lubrication performance of floating ring bearings, revealing that surface texture significantly influences the lubrication performance of bearings, with concave textures being more suitable for engineering applications.…”

Study on the reduction of residual stress in laser cladding layers through groove texture

“…With the accessibility of microfabrication techniques in recent years, surface texture technology has effectively promoted the flourishing development of tribology 19 – 21 . Many scholars have analysed the application effects and development potential of surface texture in various aspects including the reduction of friction and wear, lubricating, the reduction of resistance, and the extension of anti-corrosion life on friction surfaces 22 , 23 . PEI et al 24 employed finite element methods to study the impact of nine surface textures on the lubrication performance of floating ring bearings.…”