MD Simulation of Chip Formation in Nanometric Cutting of Metallic Glass

Yan Zhao; Yan Zhang; Ri Ping Liu

doi:10.4028/www.scientific.net/AMR.476-478.434

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478MD Simulation of Chip Formation in Nanometric...

MD Simulation of Chip Formation in Nanometric Cutting of Metallic Glass

Abstract:

Great prospect in ultra precision leads to the urgent requirement for the research on the nanometric machining of metallic glass (MG). Molecular dynamics simulation is carried out to find out the nanometric cutting mechanisms of MG. The MG workpiece, Cu50Zr50, is prepared using fast cooling simulation in isothermal-isobaric ensemble. Interactions of Cu and Zr atoms are described by Finnis-Sinclair potential. Morse potential is adopted for the interaction between the carbon atom in the diamond tool and the metal atom in the workpiece. Simulation results show that, different from cutting crystal material, there is not visible shear zone ahead of the tool. That is to say the mechanism in nanometric cutting MG may be plastic cutting.

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Periodical:

Advanced Materials Research (Volumes 476-478)

Pages:

434-437

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.434

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Online since:

February 2012

Authors:

Yan Zhao, Yan Zhang, Ri Ping Liu

Keywords:

Metallic Glass, Molecular Dynamic (MD), Nanometric Cutting

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