Dry sliding wear behaviour of A356-TiB&lt;SUB align="right"&gt;2/TiC in-situ composites at ambient and elevated temperatures

Kakaravada, Ismail; Mahamani, A.; Pandurangadu, V.

doi:10.1504/ijmatei.2020.106670

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inclusion of titanium carbide improves the wear resistance of the AA356/TiC composites. The higher wear resistance is obtained in AA356/ TiC composite (Kakaravada et al, 2020). The addition of TiC into AA6061 matrix material improves the corrosion resistance of the AA6061/TiC composites.…”

Section: Introductionmentioning

confidence: 94%

Optimization on the electrical discharge machining (EDM) process parameters of aged AA7075/TiC metal matrix composites

Rajendran,

Duraisamy,

Raj Rajendran

et al. 2023

Rev. metal.

View full text Add to dashboard Cite

The need to optimize the process parameters in Electrical Discharge Machining (EDM) for aged AA7075 Metal Matrix Composites (AAMMCs) is evident as it impacts various aspects such as mechanical properties, tool wear, surface finish, integrity, precision, accuracy, process stability, process consistency, and cost-effectiveness. In this study, aluminium alloy AA7075 was chosen as the matrix material because of the need to enhance its mechanical properties. Titanium Carbide (TiC) was chosen as the reinforcing material owing to its superior mechanical properties. Therefore, TiC holds the capability to improve the mechanical attributes of AA7075. The selection of the stir cast method for the manufacturing of AA7075/TiC (0, 4, 8, 12, and 16 wt.%) was based on its ease of fabrication, ability to achieve a uniform distribution of reinforcements, reduced susceptibility to oxidation and porosity, and improved control over the microstructure. This AA7075/12wt.%TiC MMC underwent an aging process at 520 °C for 180 min and was subsequently cooled within the furnace environment. The density of the aged and non-aged AA7075/TiC-based composites was determined through a density test using the Archimedes’ principle. Microhardness testing was conducted on the non-aged and aged AA7075-based MMCs employing a Vickers microhardness tester. Tensile strength and compressive strength of the aged and non-aged AA7075-based MMCs were determined by the usage of a universal testing machine (UTM) and a compression testing machine (CTM). The optimal combination of the manufactured AA7075/TiC MMCs was determined based on their mechanical properties. The most effective combination was identified as AA7075/12wt.%TiC MMC due to its superior values in hardness, tensile strength, compressive strength, and density compared to other combinations. The aging process aimed to enhance the mechanical properties without the need for additional reinforcements. EDAX and X-ray Diffraction Analysis (XRD) tests were employed to determine the weight percentage of the matrix and reinforcements and to identify the formation of precipitates in the AA7075/12wt.%TiC composites. The SEM equipment was utilized to verify the uniform distribution of titanium carbide in the matrix material AA7075. Optimization of EDM process parameters for aged AA7075/12wt.%TiC composite was carried out using Taguchi design-based Grey Relational Analysis (GRA). The selected input parameters for the optimization included the chromium concentration (g×l-1), current (amps) and pulse-on time (µs). The response parameters chosen for optimization were surface roughness (SR) and tool wear rate (TWR). The sequence of influencing EDM input parameters is chromium concentration, pulse on time and current. The optimized EDM process parameters were 8 g×l-1 chromium concentration, 5 amps current and 240 µs pulse on time and the corresponding response were 0.198 TWR and 1.56 SR.

show abstract

Section: Introductionmentioning

confidence: 94%

Optimization on the electrical discharge machining (EDM) process parameters of aged AA7075/TiC metal matrix composites

Rajendran,

Duraisamy,

Raj Rajendran

et al. 2023

Rev. metal.

View full text Add to dashboard Cite

show abstract

“…On the surface of specimens, plowing and material flow cause the formation of small globular-shaped particles, small pits, and soft ridges. These phenomena indicate that abrasive wear has occurred under conditions of high sliding speed and long ageing [28]. Transformation of mild wear to severe wear depends on sliding speed and ageing time, but also on the combined effect of other parameters such as particle size and shape, volume/weight fraction of reinforcements, temperature, and formation of new phases at interfaces.…”

Section: Effect Of Ageing Timementioning

confidence: 99%

Dry sliding wear behavior and its relation to microstructure of artificially aged Al-Si-Mg/TiB2 in situ composites

Rathod¹,

Menghani

2022

Metall Mater Eng

View full text Add to dashboard Cite

Mechanical stir casting is utilized to produce an artificially aged Al-Si-Mg alloy, whereas halide slat (K2TiF6 and KBF4) synthesis is utilized to produce Al-Si-Mg/TiB2 aluminum matrix composites. The dry sliding pin on disc wear test was conducted using a DUCOM/TR-20LE-PHM-200 machine to simulate an automobile application (Piston-Ring assembly). Where pistons are made of aluminum alloy (for the Pin) and rings are made of grey cast iron (for the disc material). At room temperature, a wear test was conducted by altering the ageing time (3, 6, 9, 12), sliding speed (2, 2.5 m/s), and applied load (14.71, 19.62, 24.52 N) with the disc speed (500 rpm) held constant (10 min). The results indicate that the aluminum matrix composite (AMC) wear rate is reduced by 37 percent at higher sliding speeds (2.5 m/s) and by 4 percent at lower sliding speeds (2.0 m/s) compared to the base alloy. Field emission scanning electron microscope-energy dispersive spectroscopy (FESEM-EDS) and X-ray photoelectron spectroscopy (XPS) analysis revealed that the formation of the mechanically mixed layer (MML) or oxidative layers on the worn surfaces reduces the wear rate under conditions of longer ageing time, higher sliding speed, and lower applied load. The research demonstrates that composite wear is a function of sliding velocity, aging period, and applied force. As sliding speed rose from 2 m/s to 2.5 m/s, the wear rate of composites dropped reasonably, yet composites are softer than basic alloys. It is conceivable due to the presence of a considerable amount of MML and the formation of oxidative layers between pins and their equivalents.

show abstract

Dry sliding wear behaviour of A356-TiB<SUB align="right">2/TiC in-situ composites at ambient and elevated temperatures

Cited by 2 publications

References 0 publications

Optimization on the electrical discharge machining (EDM) process parameters of aged AA7075/TiC metal matrix composites

Optimization on the electrical discharge machining (EDM) process parameters of aged AA7075/TiC metal matrix composites

Dry sliding wear behavior and its relation to microstructure of artificially aged Al-Si-Mg/TiB2 in situ composites

Contact Info

Product

Resources

About