The Dry Sliding Wear Behavior of Interpenetrating Titanium Trialuminide/Aluminium Composites (original) (raw)
Related papers
2019
242 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: DS2867028419/19©BEIESP Abstract: Current study focused on the effect of process variables namely normal load, sliding velocity, and sliding distance on wear characteristics of Ti-3Al-2.5V alloy. Wear study has been accomplished through pin on disc method in order to determine the specific wear rate of the titanium alloy. A central composite design (CCD) and ANOVA technique was performed to ascertain an outcome of process parameters on specific wear rate. The worn out samples were analyzed using scanning electron microscope (SEM). Study results indicated that amongst process variables, normal load is the most significant factor that influences the dry sliding wear behaviour of the alloy. however, wear rate of the alloy found to be increases with increasing the normal load and sliding velocity. Microstructure study explained the possible mechanism resulting in the behavior of the alloys.
Influence of load and temperature on the dry sliding wear behavior of aluminium-Ni 3 Al composites
2011
The suitability of Ni3Al intermetallics as reinforcements for Al-base materials for tribological application has been investigated. For this purpose, an Al/Ni3Al (5 wt%, 10 wt% and 15 wt%) composite is prepared by powder metallurgy techniques and tested on a pin-on-ring apparatus. The effects of the applied load (83-150 N) and temperature (25-150°C) at a constant sliding velocity of 0.4 m/s on the wear behavior of Al-Ni3Al composites and wear mechanisms during dry sliding are investigated. The worn surfaces are examined by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). It is found that the wear resistance of Al-Ni3Al composites decreased with increasing load and with an increasing fraction of reinforcement Ni3Al particles. With an increasing fraction of Ni3Al particles, the wear resistance of the composites increased at higher test temperatures, but not at lower test temperatures, and generally with increasing test temperatures, the weight loss of compo...
Dry sliding wear behavior of Al2O3 fiber reinforced aluminum composites
Composites Science and Technology, 2000
Dry sliding wear behavior of die-cast ADC12 aluminum alloy composites reinforced with short alumina ®bers were investigated by using a pin-on-disk wear tester. The Al 2 O 3 ®bers were 4 mm in diameter and were present in volume fractions (V f ) ranging from 0.03 to 0.26. The length of the ®ber varied from 40 to 200 mm. Disks of aluminum±alumina composites were rubbed against a pin of nitrided stainless steel SUS440B with a load of 10 N at a sliding velocity of 0.1 m/s. The unreinforced ADC12 aluminum alloy and their composites containing low volume fractions of alumina (V f % 0.05) showed a sliding-distance-dependent transition from severe to mild wear. However, composites containing high volume fractions of alumina (V f >0.05) exhibited only mild wear for all sliding distances. The duration of occurrence of the severe wear regime and the wear rate both decrease with increasing volume fraction. In MMCs the wear rate in the mild wear regime decreases with increase in volume fraction, reaching a minimum value at V f =0.09. Beyond V f =0.09 the wear rate increases marginally. On the other hand, the wear rate of the counterface (steel pin) was found to increase moderately with increase in V f . From the analysis of wear data and detailed examination of (a) worn surfaces, (b) their cross-sections and (c) wear debris, two modes of wear mechanisms have been identi®ed to be operative, in these materials and these are: (i) adhesive wear in the case of unreinforced matrix material and in MMCs with low V f and (ii) abrasive wear in the case of MMCs with high V f . #
Dry sliding wear analysis OF Al5083/CNT/Ni/MoB hybrid composite using DOE Taguchi method
Wear, 2020
Aluminium alloys with its low density and high strength to weight ratio have extensive applications in aerospace, marine and automobile industries. In this work Al5083/CNT/MoB/Ni hybrid composite has been compo casted to improve the corrosion resistance and to compensate the well-known low strength, deficient hardness and inadequate wear resistance of Aluminium alloys. Fabrication of the hybrid is done with 1.5 wt % of CNT, 8 wt% of Ni and varying wt% of MoB from 1 to 4 (composite A to D). Dry sliding wear analysis of composites is conducted on a pin on disc tribotester at room temperature using Taguchi L16 orthogonal array with varying load (10 N, 20 N, 30 N and 40 N), sliding velocity (0.5 m, 1.5 m, 2.5 m and 3.5 m) and wt% of MoB (1-4) as parameters. The significance and contributions of parameters on wear behavior is investigated by analysis of variance (ANOVA) and the correlation between parameters is obtained by a regression equation. Weight percentage of MoB is found to be the most contributing parameter (57.09%), followed by sliding velocity and load. The paper includes study and analysis of wear rate, micro wear mechanisms and transfer of materials involved with the tribosystem. Analysis of Optical microscopy, Scanning Electron Microscopy and EDX of the worn surface reveals that there is a shift in wear mechanism from adhesive to abrasive with increase in wt% of MoB. The three body rolling abrasion, the oxide tribo layer and the formation of Mechanical Mixed Layer (MML) between the sliding surfaces are observed to be the reasons for the decreased wear rate of the optimum composite. The result from experimentation shows close tolerance with statistical analysis.
Effect of Dry Sliding Wear Behavior of A356/TIB2 Aluminium Composite
2018
This paper examines the dry sliding wear conduct of A356/TiB2 aluminum composite arranged by the stir casting setup. A pin-on-disc wear contraption was utilized for this examination. The impact of TiB2 particulate substance and ordinary load on wear rate was broke down. The insitu created TiB2 strengthened particles upgrades the wear opposition of the A356 composite. The outcomes demonstrated that TiB2 particles were successful to expand the wear opposition of the composite. The worn surface examination of the composite as an element of Titanium diboride particulate substance and ordinary load are likewise displayed.
Reinforcement Effect on Wear Behaviour of Different Al-Alloy Composites : A Review
In recent years, Metal Matrix Composites (MMC) have received wider acceptance as material for components subjected to tribological applications. Therefore the use of different kind of Metal-matrix composite(MMC) material is in constant growing over the years, because MMC's have better physical, mechanical and tribological properties comparing to matrix material. Aluminium alloys are the most widely used material in engineering due to their alluring properties such as good ductility, high strength to weight ratio, availability and low cost and excellent corrosion resistance. Their applications have often been restricted because of their properties such as soft and poor wear resistance. These properties can be overcome by reinforcement of different particulates in aluminium and its alloys. After reinforcement, Aluminum Metal Matrix Composites (MMCs) have enhanced properties such as hardness, elastic modulus, improved wear resistance and tensile strength. Owing to their excellent improved properties, Aluminium Metal Matrix Composites (MMCs) are sought over other conventional materials in the field of aerospace, automotive and marine applications. Even if many developments in the tribological properties of the Metal Matrix Composites, some problems are still persist. Wear is one of the major problem in industrial applications and it needs further meticulous solutions. In this paper an attempt has been made to provide an extensive literature review on the wear behaviour of aluminum alloys on reinforcing with different reinforcements such as alumina oxide, silicon, magnesium, fibres and fly ash.
Wear Characteristics of Al-Based Composite Material
Diyala Journal For Pure Science, 2018
This research studies the wear characteristic of Al-based composite material. Stir casting technique was used to fabricate composite samples of Al-6061 and Al-6061 reinforced with different percentage ages (5%, 10%, 15% weight) of silicon carbide particles (SiC). Abrasive wear behavior of composite was studied by dry sliding pin on disc method. Different parameters were taken into consideration including, applied load, sliding speed, and weight percentage age of silicon carbide particles. Wear test-sliding distance ranged from 1044 m to 3123 m measured over different times (10 min, 20 min, and 30 min). Normal loads range from 10 N to 30 N, at sliding speeds of 1.74m/s. Specific wear rate was calculated considering weight loss calculation which was measured by using digital electronic balance (up to 0.01 g accuracy). The results show that by increasing the sliding speed and the applied load we get the highest wear rate in the aluminum alloy, while with the Al/SiC composite, the wear rate decreases with the increase of SiC percentage age. It was found that hardness increases simultaneously when SiC percentage age increases. The highest hardness in (AL-15 wt. % SiC) was recorded. , transportation, electronics, and sport industries , so the re-strengthened aluminum alloy matrix composites have become one of the focuses of practical applications as well as research in the structural complexes .Many scientists have concentrated on the improvements achieved through the reinforcements added to the Tribiological applications of MMCs. The impact of adding harder particles in order to enhance MMCs strength in terms of 138
Particulate Science and Technology, 2018
This paper aims to study the dry sliding wear characteristics of LM13 aluminum alloy matrix containing titanium disulfide (TiS 2) as the reinforcement (10 wt%, average size 37 µm) fabricated through liquid metallurgy route. Microstructural examination and Vickers hardness test were performed on the sample to investigate uniform distribution of the reinforcement particles in the composite. Energy Dispersive X-Ray Analysis and X-Ray Diffraction techniques were used to characterize the composite. The hardness test gave a result of 105.94 HV. The dry sliding wear experiments were designed by a five-level central composite design developed using response surface methodology. The factors considered were load, sliding distance, and velocity which were varied in the range of 10-30 N, 500-1500 m, and 1-3 m/s, respectively. The experiments were then performed at room temperature using a pin-on-disc tribometer for 20 combinations. The generated regression equation showed that the developed model established a proper relation between the process variables and the response. Load being the most influential factor showed increasing trends of wear rate in the surface plots against both velocity and sliding distance. The wear rate exhibited a nonlinear trend in the surface plots against sliding distance and velocity. Scanning electron microscopy results showed greater wear at higher loads due to higher surface damage. Thus, the fabricated Al/TiS 2 composite with the optimum wear process parameters can be well utilized for application where wear becomes a major consideration.
Abrasive wear of intermetallic-based alloys and composites
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 1997
In this study, the abrasive wear behavior of Fe composites based on these compounds, were assessed and compared to the behavior of selected metals, alloys and ceramics. Under the wear conditions used for these tests, the softer intermetallic compounds (e.g. TiAl and Fe 3 Al) behaved in a manner similar to the metals and alloys, whereas, the harder intermetallic compound (i.e. MoSi 2 ) behaved more like a ceramic. The influence of Al atomic fraction, superlattice structure and ternary alloying additions on the wear behavior of Fe 3 Al was investigated. Controlling the Al content and third element additions affected wear resistance more than superlattice structure. Composite strengthening was also explored as a method for improving wear resistance. The addition of hard second phase particles (i.e. TiB 2 to NiAl and SiC to MoSi 2 ) was also very effective improving wear resistance. Surprisingly, the addition of softer Nb particles did not significantly degrade the wear resistance of a MoSi 2 matrix, even at Nb additions of 40%. © 1997 Elsevier Science S.A.