Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Basavarajappa, S.; Davim, J. Paulo

doi:10.1590/s1516-14392013005000098

Cited by 28 publications

(10 citation statements)

References 25 publications

(35 reference statements)

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“…It suggests that ZrO 2 reinforcing particles harden the composite structure by making it brittle, and chips being removed from the composite structure during machining become saw-toothed. Similar results are reported in studies in the literature [24,25]. Fig.…”

Section: Evaluation Of Cutting Tool Wearsupporting

confidence: 91%

“…Figure 14 shows the dark spots where the removal of ZrO 2 reinforcing particles from the chip surface during machining is specified. Similar results are also reported in the literature [2,25]. The ZrO 2 particles broken and removed from the chips, causing friction between the cutting tool and the machined surface, led to the higher roughness values.…”

Section: Evaluation Of Cutting Tool Wearsupporting

confidence: 89%

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Investigation of the tool wear, surface roughness, and chip formation in the machining of ZrO2-reinforced aluminum composites

Pul

2020

J Braz. Soc. Mech. Sci. Eng.

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The aim of this study is to reveal how ZrO 2 (zirconia) contributes to the machinability of aluminum 1050. In the first stage of this study, composite materials were produced by the vortex method by adding different amounts of ZrO 2 (5%, 10%, 20%, and 30%) into commercial aluminum of 99.5% purity. Then, microstructure images of composite materials were taken under the scanning electron microscope (SEM), and the hardness of these composite materials was measured. In the last stage, the machinability tests of the composite materials were performed on the lathe under dry machining conditions at 125, 175, and 225 m/min cutting speeds and 0.03-0.06 and 0.12 mm/rev feed rates, with 1.5 mm constant depth of cut. Uncoated cementite carbide cutting tool inserts were used in machining tests. SEM images of the cutting tool inserts were taken, and the roughness values of the machined surfaces were measured. Chip samples were taken and investigated. It was observed that all the cutting tools had a Built-Up Edge (BUE) formation. Surface roughness and BUE formation increased as the feed rates were increased and decreased with increasing cutting speed. The roughness values decreased slightly and then increased again depending on the ZrO 2 ratio. As the feed rates increased, a transition from ribbon chip type to the helical and saw-toothed forms was observed. It was also observed that the chip formation changed depending on the amount of ZrO 2 in the composite structure.

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Section: Evaluation Of Cutting Tool Wearsupporting

confidence: 91%

Section: Evaluation Of Cutting Tool Wearsupporting

confidence: 89%

Investigation of the tool wear, surface roughness, and chip formation in the machining of ZrO2-reinforced aluminum composites

Pul

2020

J Braz. Soc. Mech. Sci. Eng.

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“…Metal Matrix Composites exhibit enhanced properties compared to conventional alloys in various applications as they have high specific strength, stiffness and better wear resistance 1 . Aluminium matrix composites with multiple reinforcements are finding applications in aerospace and automotive industries due to enhanced mechanical and tribological properties compared to single reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Wear Behaviour of Eutectic Al-Si Alloy- Al2O3 - Graphite Composites Fabricated Through Squeeze Casting

Palanisamy

2014

Mat. Res.

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Dry sliding wear test was conducted on Al -Si alloy -Al 2 O 3 -Graphite composites which are fabricated through squeeze casting method, using pin -on -disc wear testing rig. The influence of parameters such as applied load, sliding velocity and weight percentage of graphite, on the wear loss of Al-5 wt. % Al 2 O 3 -Graphite hybrid composite was investigated through Taguchi and Analysis of variance (ANOVA).It was found that the applied load was the most influential parameter on wear followed by sliding velocity and weight percentage of graphite. The morphology of worn surfaces of the wear pins was investigated by Scanning Electron Microscope (SEM) to analyze the wear mechanism. EDS analysis was carried out to investigate the Mechanically Mixed Layer (MML), which forms on the worn surface of the composites.

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“…Compared to conventional alloys, the SiC particle reinforced AMCs have higher mechanical strength and wear resistance, due to the fact that SiC particles have high modulus of elasticity and yield strength, and the base alloy has the low yield strength and good plasticity [4,10]. Because of those characteristics, in machining of the composites, matrix deforms plastically and the SiC particles only deform elastically or break.…”

Section: Types Of Reinforcementsmentioning

confidence: 99%

Tribological characteristics of Al/SiC/Gr hybrid composites

et al. 2018

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Abstract. Metal matrix composites (MMCs) are considered as important engineering materials due to their excellent mechanical, as well as tribological properties. When the metal (or alloy) matrix is reinforced with two or more reinforcements, those composites are the so-called hybrid composites. The aluminum metal matrix composites, reinforced with silicon carbide (SiC) and graphite (Gr), are extensively used due to their high strength and wear resistance. The tribological characteristics of such materials are superior to characteristics of the matrix. This research is presenting influence of the load and the graphite and silicon carbide contents the composites' wear rate and the friction coefficient.

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Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Cited by 28 publications

References 25 publications

Investigation of the tool wear, surface roughness, and chip formation in the machining of ZrO2-reinforced aluminum composites

Investigation of the tool wear, surface roughness, and chip formation in the machining of ZrO2-reinforced aluminum composites

Investigation on the Wear Behaviour of Eutectic Al-Si Alloy- Al2O3 - Graphite Composites Fabricated Through Squeeze Casting

Tribological characteristics of Al/SiC/Gr hybrid composites

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