EFFECTS OF INDENTER RADIUS ON MECHANICAL PROPERTIES AND DEFORMATION BEHAVIOR OF Cu50Zr50 METALLIC GLASSES IN INDENTATION AND SCRATCHING PROCESS

Phan Thi Ha Linh; Anh-Son Tran

Phan Thi Ha Linh Hung Yen University of Technology and Education
Anh-Son Tran Hung Yen University of Technology and Education

Keywords: Cu50Zr50 MGs, indentation, scratching, resistance coefficient

Abstract

In this paper, a combination between the indentation and scratching process was developed to analyze the deformation mechanisms and mechanical properties of Cu₅₀Zr₅₀ metallic glasses (MGs) using molecular dynamics (MD) simulation. The deformation mechanisms and mechanical properties of Cu₅₀Zr₅₀MGs are appraised through the surface morphology, pile-up height, hardness, machining forces, and resistance coefficient. The influences of different indenter radius are clearly investigated. The results exhibit that the machining zone increases as increasing indenter radius. The pile-up height and hardness reduce with a bigger radius of the indenter. The hardness values range from 7.94 to 13.33 GPa. The forces increase, however, the resistance coefficient decreases as the indenter radius increases.

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