The effects of various reinforcements on dry sliding wear behaviour of AA 6061 nanocomposites

Jeyasimman, D.; Narayanasamy, R.; Ponalagusamy, R.; Anandakrishnan, V.; Kamaraj, M.

doi:10.1016/j.matdes.2014.08.039

Cited by 62 publications

(23 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aluminium metal matrix composites are replacing the aluminium alloys to avoid disadvantages such as poor wear resistance, poor corrosion resistance and lower strengths at elevated and room temperatures [11]. In many applications, wear is the main problem which decreases the lifespan of the components.…”

Section: Introductionmentioning

confidence: 99%

Dry sliding wear behaviour of ultrasonically-processed AA6061/SiCp nanocomposites

Reddy¹,

Krishna²,

Rao³

2017

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

The present study focused on the wear performance of AA6061/ SiCp (1, 1.5 and 2 wt. %) of nanocomposites at dry sliding condition. The nanocomposite specimens were fabricated through ultrasonic assisted stir casting technique. The wear experiments were conducted under normal atmospheric conditions using a pin-on-disc apparatus. Three different applied normal loads on nanocomposite pin (10 N, 15 N, and 20 N); at various sliding velocities of (1 m/s, 1.5 m/s, and 2 m/s); and at sliding distances of (1000 m, 2000 m, and 3000 m) were considered. The influences of applied normal load on nanocomposite pin, wt. % of SiCp reinforcement particles, sliding velocity, and sliding distance on both friction coefficient and wear loss were studied. The changes of wear loss and friction coefficient with varying applied normal loads, sliding velocities, and sliding distances were plotted. It was observed that the wear loss increased linearly with increasing sliding distance and sliding velocity. This was due to the increase of oxidation layer on the pin surface. The average friction coefficient at sliding velocity 1 m/s for 1 wt. % of SiCp, 1.5 wt. % of SiCp, and 2 wt. % of SiCp reinforced nanocomposites at sliding distance 3000 m, at 20 N normal loads was 0.29, 0.43, and 0.46, respectively. The average friction coefficient at 2 m/s sliding velocity for the same load and sliding distance was 0.26, 0.27, and 0.28, respectively. The increase of SiCp reinforcement in the matrix increased the friction coefficient due to its cubic crystal structure. The increase of sliding velocity and sliding distances reduced the friction coefficient. The worn surfaces of the samples were examined using SEM and EDX analyses. SEM micrograph analysis of the wear surfaces of the nanocomposites exhibited the abrasion wear and oxidative wear with severe plastic deformation. The shallower scratches, circular grooves, and deeper grooves were identified at different conditions on the worn surfaces.

show abstract

Section: Introductionmentioning

confidence: 99%

Dry sliding wear behaviour of ultrasonically-processed AA6061/SiCp nanocomposites

Reddy¹,

Krishna²,

Rao³

2017

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…The frictional heat generated during the sliding process resulted in the formation of oxide films. The presence of stable oxide film prevented direct metal to metal contact between the pin and the disc resulting in lesser wear [22,27]. It can be witnessed in the figure 8(d).…”

Section: Worn Surface Morphologies and Wear Mechanismmentioning

confidence: 94%

Investigation on mechanical and tribological behaviour of titanium diboride reinforced martensitic stainless steel

Sadhasivam

Mohan²,

Sankaranarayanan

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

The role of metal matrix composites (MMCs) has gained huge momentum in various researches as well as in industrial applications due to their high stiffness and higher strength to weight ratio. It helps in achieving enormous weight reduction without compromising the strength of the material. In this study, a novel attempt was made to fabricate MMCs with martensitic stainless steel as matrix and titanium diboride (TiB 2 ) as reinforcement. The AISI 420 matrix with different weight percentages (1%, 2%, and 4%) of TiB 2 reinforcement was fabricated by vacuum induction melting technique (VIM). The aim of this study was to analyze the influence of TiB 2 particle addition on the mechanical and tribological properties of AISI 420 composites. X-ray diffraction studies revealed the presence of TiB 2 phase in the composite along with peak shifting and broadening of the steel matrix due to induced strain. Optical microscopy showed the distribution of TiB 2 particles in the matrix along with a significant amount of grain refinement of the composite due to the addition of TiB 2 . Microhardness results showed that the presence of TiB 2 improved the hardness with AISI 420/4%TiB 2 composite possessing the maximum hardness. Tensile test results indicated a significant improvement in the ultimate tensile and yield strength of the composite with the addition of TiB 2 . The wear tests were carried out on a pin on disc tribometer for various loads at a different sliding distance for steady sliding velocity. The dispersion of TiB 2 particle helped in achieving better wear resistance of the composites. Wear surface morphology was carried out to explore the wear mechanisms. Among the various wear mechanisms, abrasion and oxidation phenomena dominated in the composites. Taguchi optimization technique predicted that wt% of TiB 2 and applied load as influencing factors on the wear rate of the material.

show abstract

“…It is understood from the characteristic curves that there is not so much resistance to wear initially over the surface of the workpiece, but due to ageing when the particles settle down in the bulk material, they offer resistances [20] and [21]. This particular behaviour of the composite material restricts the machinists to minimize the depth of cut in conventional machining [22] and [23]. The investigation on the wear resisting capability can be done comprehensively on the developed material.…”

Section: Wear Analysismentioning

confidence: 99%

A Comprehensive Study of Aluminium Based Metal Matrix Composite Reinforced with Hybrid Nanoparticles

Venkatesh¹,

Rao²,

Rengarajan³

2019

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

In this experimental investigation, the mechanical and machinability behaviour of aluminium matrix reinforced with hybrid nanocomposites are studied, considering their widespread application specifically in structural support systems. Aluminium alloy, copper (metal), Alumina (ceramic), and Graphite (an allotropic form of carbon) are chosen for the development of composites, and they justify the term hybrid. They are mixed in the proportion of Al6061-70%, Al 2 O 3-12%, Cu-9%, Gr-9% by weight percentage and process by mechanical alloying method, resulting with an average particle size of 70 nm. The SEM and XRD analysis confirm that the materials enter into the nanoregime. Plate-and rod-like shapes are prepare with these composite materials by stir casting process at 500°C with rotational speed of 300 rpm. The maximum ultimate strength of 156 MPa and hardness of 431.4 MPa (44 HV) are achieved in the hybrid nanocomposites. The wire cut process assisted by electrical discharge machining is used to assess the machinability aspects of the material. The Taguchi methods of multi-objective optimization are successfully done. Analysis of variance is done to arrive at the correlation coefficient. Minor investigation is also done in order to understand the wear resistance of the material developed. The wear rate of 0.54⋅10 −10 m 2 /kg is observed at normal loading condition.

show abstract

The effects of various reinforcements on dry sliding wear behaviour of AA 6061 nanocomposites

Cited by 62 publications

References 35 publications

Dry sliding wear behaviour of ultrasonically-processed AA6061/SiCp nanocomposites

Dry sliding wear behaviour of ultrasonically-processed AA6061/SiCp nanocomposites

Investigation on mechanical and tribological behaviour of titanium diboride reinforced martensitic stainless steel

A Comprehensive Study of Aluminium Based Metal Matrix Composite Reinforced with Hybrid Nanoparticles

Contact Info

Product

Resources

About