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Effect of Machining Parameters on the Cutting Force and Microstructure in Nanometric Cutting of Cu₅₀Zr₅₀ Metallic Glass

Lookup NU author(s): Dr Dehong Huo

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).

Abstract

Unlike the traditional crystalline metals, metallic glasses are lack of long-range order and have short-range order. Metallic glasses as amorphous alloys have excellent physical, chemical and mechanical properties, and have a broad application prospects in military, aerospace and sports equipment due to their unique microstructure. Cutting is an important shaping process for high efficient manufacturing of metallic glass components. Nanometric cutting simulation of Cu₅₀Zr₅₀ was carried out to investigate the effect of cutting speed and cutting depth on the cutting force by molecular dynamics simulation. The radial distribution functions and common neighbor analysis were calculated to analyze the microstructure of the chips and subsurface of the metallic glass workpiece. The results showed that there is no obvious change of microstructure during cutting process of Cu₅₀Zr₅₀ metallic glasses. The above simulation results were compared with those of nanometric cutting of single crystal copper with the same cutting parameters. It is found that, when nanometric cutting of Cu₅₀Zr₅₀ metallic glass, the average value and the fluctuation of cutting forces are larger than that of single crystal coppers. In addition, the normal cutting force was found to be substantially equal to the main cutting force during the cutting process of Cu₅₀Zr₅₀ metallic glasses. However, the normal force is smaller than the main cutting force during nanometric cutting process of the single crystal copper.

Publication metadata

Author(s): Zhao Y, Li T, Zhang Y, Huo D

Publication type: Article

Publication status: Published

Journal: Current Nanoscience

Year: 2017

Volume: 13

Issue: 1

Pages: 48-54

Online publication date: 30/09/2016

Acceptance date: 02/05/2016

Date deposited: 17/05/2016

ISSN (print): 1573-4137

ISSN (electronic): 1875-6786

Publisher: Bentham Science Publishers

URL: http://dx.doi.org/10.2174/1573413712666160530125015

DOI: 10.2174/1573413712666160530125015

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