Investigation of the microstructure and wear behaviour of titanium compounds reinforced aluminium metal matrix composites

Mahesh, L.; Vinyas, M.; Reddy, J. Sudheer; Muralidhara, B. K.

doi:10.1088/2053-1591/aaec4e

Cited by 12 publications

(8 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…COF of the composites increases with the increase in the UST power due to the uniform distribution of nanoparticles. The increased COF value at lower sliding speed is due to the large exposure of the pin surface on the counterface under the action of applied normal load [41]. The COF values decrease with an increase in the sliding speed.…”

Section: Tribological Propertiesmentioning

confidence: 94%

“…Further, the improvement in COF is due to the frictional heating at higher normal load and higher sliding speeds. The reduction in COF with increasing the normal load and sliding speed can be attributed to the formation of the oxide layer which effectively enhances the lubrication effect [41]. Besides, the bulk softening and plastic flow due to frictional heating further smoothens the pin surface which leads to a reduction in adhesion between the pin and counterface surfaces [4].…”

Section: Tribological Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites

Gnanavelbabu

Surendran

Kumar

2020

Mater. Res. Express

View full text Add to dashboard Cite

In this study, magnesium alloy (AZ91D) matrix composites reinforced with 1 wt% of nano alumina (n-Al 2 O 3 ) were fabricated using novel Ultrasonic Treatment (UST)assisted squeeze casting method. UST was carried out at four different levels of ultrasonic power namely, 0 W (without UST), 1500 W, 2000 W and 2500 W at constant frequency and time. The composites were heat-treated at T6 condition under argon gas protected environment. Microstructural analysis was done using optical microscopy and high-resolution scanning electron microscopy. Physical, mechanical and tribological properties of the composites were evaluated. A significant refinement in grain structure and improvement in porosity was seen on an increase in UST power. Improvement was seen in microhardness, yield strength, ultimate tensile strength and % of elongation of the composite fabricated at 2500 W by 18%, 48%, 28%, and 10% respectively compared to an untreated composite. The composite fabricated at 2500 W showed less wear rate and coefficient of friction when compared to other composites at all sliding conditions. Scanning electron microscope images of the worn surface of the composite pins revealed that the wear mechanisms dominated were abrasion, adhesion, oxidation and delamination.

show abstract

Section: Tribological Propertiesmentioning

confidence: 94%

Section: Tribological Propertiesmentioning

confidence: 99%

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites

Gnanavelbabu

Surendran

Kumar

2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…This can be attributed to the matrix strengthening due to the inclusion of ceramic particles that are harder in nature. 20,23,31 The UST helps to improve composite hardness by providing a homogeneous distribution of the reinforcement particles. Such uniformly distributed particles refine the grain structure and resist local plastic deformation of the matrix during indentation.…”

Section: Resultsmentioning

confidence: 99%

“…The evenly dispersed ceramic particles serve as a load-sharing agent and increase the load-bearing capacity of the matrix, resulting in higher wear resistance. 23,37 Thus, at higher normal loads such as 37.5 and 50 N, ceramic particles decreased the plastic deformation of the matrix and reduced the wear rate significantly.…”

Section: Tribological Behaviour At Room Temperaturementioning

confidence: 97%

“…By ultrasonic casting process, Ma et al 22 successfully manufactured Al/12 wt.% TiN composite and found a better improvement in the wettability and tribological characteristics of the composite. Mahesh et al 23 compared the tribological behaviour of aluminium composites reinforced with three different titanium compounds (TiC, TiO 2 and TiN, up to 15 wt.%) and found that composite reinforced by TiN performed well.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tribological behaviour of AZ91D/ultra-high-temperature ceramic composites at room and elevated temperatures

Surendran

Gnanavelbabu

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

In this research work, the tribological behaviour of an AZ91D alloy and its composites reinforced with different titanium-based ultra-high-temperature ceramic particulates was investigated. Titanium-based ultra-high-temperature ceramic materials (5 wt%) such as titanium carbide, titanium boride and titanium nitride was used for the fabrication of three different composites, namely ATC, ATB and ATN, respectively. The proposed composites were prepared using a novel ultrasonic treatment-assisted stir-squeeze casting technique. Material characterization was performed using scanning electron microscopy and X-ray diffraction techniques. The porosity and hardness of the composites were determined prior to the wear test. In the pin-on-disc tribometer, the wear test was carried out at room temperature by varying the normal load (12.5–50 N) and the sliding speed (0.25–1 m/s). In addition, at a temperature of up to 200 °C, the tribological behaviour of the composites was assessed. The homogeneous distribution of ultra-high-temperature ceramic particles in the matrix was confirmed by the analysis of the microstructure using scanning electron microscopy images. The X-ray diffraction results showed that the reinforcement materials in the matrix were thermally stable. The hardness of the ATC, ATB and ATN was improved by approximately 31%, 33.8% and 29.6%, respectively. In comparison, at all wear testing conditions, ATB demonstrated superior tribological performance, while the performance of ATN was poor and ATC was moderate. Abrasion, oxidation and delamination were the wear mechanisms at room temperature. At elevated temperatures, oxidation, delamination, thermal softening and plastic deformation wear mechanisms were significant..

show abstract

Investigations on Mechanical and Wear Properties of Molybdenum Trioxide-Reinforced Aluminum Alloy (AA7075) Matrix Composites Produced via Stir Casting Process

Gopikrishnan¹,

Ravichandran²

2022

Arab J Sci Eng

View full text Add to dashboard Cite

Investigation of the microstructure and wear behaviour of titanium compounds reinforced aluminium metal matrix composites

Cited by 12 publications

References 11 publications

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites

Tribological behaviour of AZ91D/ultra-high-temperature ceramic composites at room and elevated temperatures

Investigations on Mechanical and Wear Properties of Molybdenum Trioxide-Reinforced Aluminum Alloy (AA7075) Matrix Composites Produced via Stir Casting Process

Contact Info

Product

Resources

About

Investigation of the microstructure and wear behaviour of titanium compounds reinforced aluminium metal matrix composites

Cited by 12 publications

References 11 publications

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al2O3 composites

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al2O3 composites

Tribological behaviour of AZ91D/ultra-high-temperature ceramic composites at room and elevated temperatures

Investigations on Mechanical and Wear Properties of Molybdenum Trioxide-Reinforced Aluminum Alloy (AA7075) Matrix Composites Produced via Stir Casting Process

Contact Info

Product

Resources

About

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites

Influence of ultrasonication power on grain refinement, mechanical properties and wear behaviour of AZ91D/nano-Al₂O₃ composites