Cumulative tool wear in machining metal matrix composites Part I: Modelling

Hung, N.P.; Zhong, Chonghua

doi:10.1016/0924-0136(95)02114-0

Cited by 30 publications

(16 citation statements)

References 1 publication

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“…Similar results were found by Lane (1992). However, this is consistent with the previous work carried out by Hung et al (1996). As a result, the cutting speed had a considerable effect on the tool life which decreased with increasing the cutting speed, when the weight fraction of particles was increased from 10% to 25% and hence, increasing cutting speed produced a faster tool wear.…”

Section: The Effects Of Experimental Factors On the Tool Wearsupporting

confidence: 91%

“…Among the various types of MMCs, the aluminium-based MMCs reinforced with discontinuous ceramic reinforcements are rapidly replacing conventional materials in the automotive and aerospace industries (Rogathi, 1991;Allison and Cole, 1993;Joshi et al, 1995). Although the physical and mechanical properties of the MMCs reinforced with Al 2 O 3 or SiC particles have been significantly increased, they exhibit high hardness and result in excessive cutting tool wear leading to high machining cost (Hung et al, 1995;Songmene and Balazinski, 1999;Tomac and Tonnessen, 1992;Hung et al, 1996). The properties of the MMCs depend mainly on the reinforcing constituent and the volume fraction used.…”

Section: Introductionmentioning

confidence: 98%

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The effects of reinforcements and heat treatment on the tool performance during machining of metal matrix composites

Kök

2013

IJMMM

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Machining of metal matrix composites (MMCs) has been considerably difficult due to the extremely abrasive nature of the reinforcements that causes rapid tool wear and high machining cost. In this study, the effect of T6 heat treatment, cutting parameters and weight fraction of reinforcement on the machinability of 7075Al/Al 2 O 3 composites was investigated because of tool wear. Machining tests were performed on both as-cast and heat treated aluminium matrix composites reinforced with 10% and 25% weight fractions and 16 µm average size of Al 2 O 3 particles by turning process using physical vapour deposition (PVD) coated carbide tool CP500 at different cutting conditions. The analysis of variance (ANOVA) was also employed to carry out the effects of these parameters on the cutting tool life. It was concluded that in both as-cast and heat treated composites the tool life decreased with increasing the cutting speed, feed rate and weight fraction of particles. However, heat treatment improved significantly the tool life. For the tool life, particle content was found to be the most effective factor followed by heat treatment and cutting speed respectively.Reference to this paper should be made as follows: Kök, M. (2013) 'The effects of reinforcements and heat treatment on the tool performance during machining of metal matrix composites', Int. J. Machining and Machinability of Materials, Vol. 13, No. 1, Biographical notes: Metin Kök is an Assistant Professor at Kahramanmaraş Sütçü Imam University. He studied mechanical engineering, branch: manufacturing and construction. He holds a PhD on production and machinability of metal matrix composites reinforced with particulates. His fields of activity are particle reinforced metal matrix composites, machinability, cad-cam, cnc machines.

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Section: The Effects Of Experimental Factors On the Tool Wearsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 98%

The effects of reinforcements and heat treatment on the tool performance during machining of metal matrix composites

Kök

2013

IJMMM

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“…The current investigation was done on beta silicon carbide (3C-SiC), but the SDM method can also be applied to other materials which are not readily machinable through conventional approaches, e.g., titanium [28], silicon [36], nickel [37], pretentious low carbon ferrous alloys [38,39], various polytypes of silicon carbide [40,41], silicon nitride [42] and Al-SiCp metal matrix composites [43] where rapid tool wear and consequent deterioration to the quality of surface remains a major concern till date. Researchers have also investigated preferential heating and thermal softening of the workpiece by a laser device prior to machining.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Assessment of Surface Defect Machining and Hot Machining of Nanocrystalline Silicon Carbide

Goel

Rashid

Luo

et al. 2014

Journal of Manufacturing Science and Engineering

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In this paper, a newly proposed machining method named "surface defect machining" (SDM) was explored for machining of nanocrystalline beta silicon carbide (3C-SÍC) at 300 K using MD simulation. The results were compared with isothermal high temperature machining at 1200 K under the same machining parameters, emulating ductile mode micro laser assisted machining (ß-LAM) and with conventional cutting at 300 K. In the SDM simulation, suiface defects were generated on the top of the (010) surface of the 3C-SÍC work piece prior to cutting, and the workpiece was then cut along the {100) direction using a single point diamond cutting tool at a cutting speed of 10 mis. Cutting forces, subsurface deformation layer depth, temperature in the shear zone, shear plane angle and friction coefficient were used to characterize the response of the workpiece. Simulation results showed that SDM provides a unique advantage of decreased shear plane angle which eases the shearing action. This in turn causes an increased value of average coefficient of friction in contrast to the isothermal cutting (carried at 1200 K) and normal cutting (carried at 300 K). The increase of friction coefficient, however, was found to aid the cutting action of the tool due to an intermittent dropping in the cutting forces, lowering stresses on the cutting tool and reduced operational temperature. Analysis shows that the introduction of surface defects prior to conventional machining can be a viable choice for machining a wide range of ceramics, hard steels and composites compared to hot machining, [

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“…As the particles are hard, frequent interactions will cause abrasive wear to the indenter. This can be a main reason for high tool wear during machining of MMCs [27][28][29][30].…”

Section: Reinforcement Displacement and Interactionmentioning

confidence: 99%

Deformation mechanisms of MMCs under indentation

Pramanik

Zhang

Arsecularatne

2008

Composites Science and Technology

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This paper investigates the deformation mechanisms of MMCs subjected to micro-indentation by a spherical indenter using a threedimensional finite element modeling. It was found that deformation behavior, hardness and work hardening of MMCs were highly dependant on the location of indentation relative to particles, volume percentage of the particle, and the size ratio of indenter to particle. The hardness of an MMC varied in a complex manner depending on the restriction on the matrix flow by reinforced particles and work hardening of the matrix material. Hardness increased with the increase of volume percentage of reinforced particles and decrease of the size ratio of indenter to particle. Matrix flow due to indentation was highly non-uniform which generated an inhomogeneous strain filed in an MMC. These pose a question that the conventional definition of micro-hardness is not very appropriate for characterizing MMCs.

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Cumulative tool wear in machining metal matrix composites Part I: Modelling

Cited by 30 publications

References 1 publication

The effects of reinforcements and heat treatment on the tool performance during machining of metal matrix composites

The effects of reinforcements and heat treatment on the tool performance during machining of metal matrix composites

A Theoretical Assessment of Surface Defect Machining and Hot Machining of Nanocrystalline Silicon Carbide

Deformation mechanisms of MMCs under indentation

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