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A molecular dynamics simulation of wear mechanism of diamond tool in nanoscale cutting of copper beryllium

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Abstract

In the present study, molecular dynamics simulation (MDS) is employed to study the wear mechanism of single crystal diamond tool during nanocutting of copper beryllium (CuBe). Two edge configurations, i.e., both sharp and worn out tools, are chosen to study the tool and workpiece interaction during the nanocutting of CuBe. Further, the study involves the experimental characterization techniques viz. scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and Raman spectroscopy to confirm the simulation results. The results of the molecular dynamics simulation (MDS) show that the presence of Be as a hard particle in workpiece material influences the cutting forces which subsequently causes degradation of the sharp edge of the diamond tool. Furthermore, the carbon (C) atoms removed from the tool react with Be particles and as a result, it causes the formation of beryllium carbide (BeC). Beryllium interaction with the blunt edge configuration of the tool causes amorphization at the tool edge. Raman spectroscopy of the used diamond tool on CuBe reveals the similar phenomena of amorphization of the diamond at the tool edge. Moreover, surface generation is dependent on the tool edge condition as blunt edge tool leads to smoother surface compared to the surface generated by sharp edge configuration.

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Authors and Affiliations

  1. Homi Bhabha National Institute, Mumbai, 400 094, India

    A. Sharma, D. Datta & R. Balasubramaniam

  2. Bhabha Atomic Research Centre, Mumbai, 400 085, India

    D. Datta & R. Balasubramaniam

Authors
  1. A. Sharma
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  2. D. Datta
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  3. R. Balasubramaniam
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Correspondence to A. Sharma.

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Sharma, A., Datta, D. & Balasubramaniam, R. A molecular dynamics simulation of wear mechanism of diamond tool in nanoscale cutting of copper beryllium. Int J Adv Manuf Technol 102, 731–745 (2019). https://doi.org/10.1007/s00170-018-03246-0

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  • DOI: https://doi.org/10.1007/s00170-018-03246-0

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