Dry Sliding Wear Behaviour of Titanium (Grade 5) Alloy by Using Response Surface Methodology

Abstract

The dry sliding wear behaviour of titanium (Grade 5) alloy has been investigated in order to highlight the mechanisms responsible for the poor wear resistance under different applied normal load, sliding speed, and sliding distance conditions. Design of experimental technique, that is, response surface methodology (RSM), has been used to accomplish the objective of the experimental study. The experimental plan for three factors at three levels using face-centre central composite design (CCD) has been employed. The results indicated that the specific wear rate increases with an increase in the applied normal load and sliding speed. However, it decreases with an increase in the sliding distance and a decrease in the sliding speed. The worn surfaces of the titanium alloy specimens were analyzed with the help of scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) techniques. The predicted result also shows the close agreement with the experimental results and hence the developed models could be used for prediction of wear behaviour satisfactorily.

Assessment of Tribological performance of Coconut Shell Ash Particle Reinforced Al-Si-Fe Composites using Grey-Fuzzy Approach

“…Moreover, statistical approaches such as Taguchi method [15][16][17], Response Surface Methodology [10,18], Grey Relational Analysis (GRA) [14,[19][20][21]; soft computing techniques (ANN & ANFIS [22]) and artificial intelligence such as Genetic Algorithm (GA) [23], Particle Swarm Optimization (PSO) [24,25], and Teachinglearning-based optimization (TLBO) [26] techniques have been used to optimize the process parameters which influence tribological and machining behaviour of composites. However, it is observed that most of the results are not favourable due to the uncertainty associated with the process variables.…”

Effect of HAp and β‐TCP incorporation on the tribological response of Ti6Al4V biocomposites for implant parts

“…The processing of biocomposites using HP in the aforementioned conditions was proved to be effective in preserving the mechanical and chemical properties of the bioactive phase. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] It has been demonstrated in another study, under submission, that the addition of a bioactive phase to the Ti alloy substantially increases its bioactivity. Furthermore, it has been shown that following the processing by the HP technique, the porosity of the samples is residual and thus close to fully densified specimens were obtained.…”

“…In fact, despite having good mechanical properties, the usually poor wear resistance exhibited by Ti alloys compromises their utility as tribological surfaces, which is mainly related to plastic shearing when sliding against harder surfaces. 23 The most common wear mechanisms that occur in these situations are abrasive, adhesive and also fatigue wear between the mating surfaces. The reasons why theses mechanisms occur rely on the variability of the surfaces' hardness and deformations or porosities.…”

“…The rather poor tribological behavior of Ti6Al4V is usually related with high friction coefficient values and severe adhesive and abrasive wear. [23][24][25] The influence on wear performance of the incorporation of HAp/b-TCP on an external composite layer of the implant design is not yet fully understood, and has yet to be assessed for components produced by HP or HIP. A study with some similarities, where a coating of HAp-Ti composite is applied by spark plasma over a titanium substrate, demonstrates that the addition of 10 to 20 (vol %) Ti to HAp may improve the wear performance of the composite coating.…”

Dry sliding wear performance of an annealed TiNi alloy with different nickel contents

“…Titanium alloys are attractive for critical application such as aerospace industries, automotive, energy industries and biomedical [1][2][3]. The field of biomaterials is an important research area that has rapidly developed in recent decades, particularly when conducting studies on the TiNi alloy, which is considered as a promising material for clinical applications.…”