• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2022, Vol. 58 ›› Issue (15): 92-104.doi: 10.3901/JME.2022.15.092

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An Investigation into the Erosion Mechanisms of Zr-based Bulk Metallic Glasses by Loose Abrasives

YE Qili, WANG Chengyong, LAI Zijian, DING Feng, WANG Jun   

  1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006
  • Received:2021-09-14 Revised:2022-03-30 Published:2022-10-13

Abstract: As a cold material removal technology, abrasive waterjet machining has a good potential for the processing of Zr-based bulk metallic glass(BMG) materials.An experimental investigation of the material removal process is studied, and mechanisms of Zr-based BMG by individual brown fused alumina and glass bead abrasives under different impact velocities and angles are investigated.The effect of process parameters on the material removal rate is quantitatively discussed.The response of Zr-based BMG after impacted by abrasive particles mainly include elastic deformation, shear slip, viscous flow, shear cracks and bulk material removal, in which both plastic and brittle modes of material removal exist.The impact process mainly includes particle rebound, crushing and embedding, of which particle rebound is the main phenomenon.The amount of material removed per impact increases with the increase of abrasive impact speed.It is shown that brown fused alumina abrasives can remove more material than the glass beads, and the highest removal rate is found at the impact angle of about 450.The findings of this study provide a deep understanding of the erosion mechanisms of glassy metals and lay a foundation for future studies of abrasive waterjet machining of this type of materials.

Key words: Zr-based bulk metallic glass, abrasive water jet machining, single particle impact, material removal mechanism

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