• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (3): 223-232.doi: 10.3901/JME.2020.03.223

Previous Articles    

Study on the Cutting Characteristics and Chip Formation Mechanism of Typical Amorphous Alloy Fe40Ni40P14B6 under Micro Cutting Conditions

HE Genghuang1,2, LI Lingxiang1,2, LIU Xianli2, JIANG Tao1, ZOU Jianping1   

  1. 1. Xiamen Golden Egret Special Alloy Co., Ltd., Xiamen 361006;
    2. The Key Lab of National and Local United Engineering for “High-Efficiency Cutting&Tools”, Harbin University of Science and Technology, Harbin 150080
  • Received:2019-02-11 Revised:2019-08-10 Online:2020-02-05 Published:2020-04-09

Abstract: Amorphous alloy is a metal alloy with irregular internal arrangement of atoms. It is widely used due to its high strength, toughness corrosion resistance, and excellent magnetic properties. At first, the state of deformation and chip formation are analyzed with the methods of numerical simulation combined with the introduction of adiabatic model during the cutting process of typical amorphous alloy Fe40Ni40P14B6. The result show that the initial adiabatic deformation and cyclic loading in the cutting process lead to the formation of local shear bands in the cutting area and product the lamellar chips. Then, the micro PCD tool is used for cutting experiments under micro-cutting conditions. The load function in the cutting process is collected by means of the wireless measuring system. Moreover, the working state of the tool is monitored by high-speed camera. At last, the micro-chip samples are collected, experimental results similar to the results of numerical simulation by means of the SEM to observe and analysis the submicroscopic morphology characteristics. It reveals the cutting characteristics and chip formation mechanism of amorphous alloy under micro cutting condition. The research data can provide reference for the development of micro tool.

Key words: amorphous alloy, sheet chip, PCD tool, micro cutting, adiabatic model

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