J. Mater. Sci. Technol. ›› 2015, Vol. 31 ›› Issue (2): 153-158.DOI: 10.1016/j.jmst.2014.11.010

• Orginal Article • Previous Articles     Next Articles

Cutting Characteristics of Zr-Based Bulk Metallic Glass

D.X. Han1, G. Wang1, J. Li1, K.C. Chan2, S. To2, F.F. Wu2, Y.L. Gao1, Q.J. Zhai1   

  1. 1 Laboratory for Microstructures, Shanghai University, Shanghai 200444, China; 2 Department of Industrial and System Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
  • Received:2014-05-02 Online:2015-02-20 Published:2015-07-23
  • Contact: Corresponding author. Prof., Ph.D.E-mail address: g.wang@shu.edu.cn (G. Wang)
  • Supported by:
    The work was supported by the National Natural Science Foundation of China (Nos. 51171098, and 51222102), the Research Grants Council of Hong Kong (No. PolyU511211), the Innovation Program of Shanghai Municipal Education Commission (No. 12ZZ090), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and the “085 Project” in Shanghai University.

Abstract: Cutting behavior exerts a considerable influence on the fabrication of bulk metallic glass (BMG) components. In this study, the influences of machining parameters (i.e., depth of cutting, feed rate, and spindle rate) on the turned surface of a Zr-based BMG after observing the 3D morphologies of this surface were characterized. The results showed that the influence of the spindle rate on the surface morphologies is more substantial as compared to the depth of cutting and the feed rate. Nanoscratch tests were conducted to further characterize the separation mechanism of the chips, which revealed that the chips are torn off the surface of a BMG because of inhomogeneous localized maximum shear stress.

Key words: Bulk metallic glass, Ultra-precision machining, Surface morphologies, Chips' surface, Nanoscratch