A Simulated Investigation of Ductile Response of GaAs in Single-Point Diamond Turning and Experimental Validation

• 作者: Fei Ding Pengfei Fan Xichun Luo Yanquan Geng Yongda Yan Yuzhang Wang
• 来源期刊: 纳米制造与计量(英文)
• 学科: 工学
• 关键词: Molecular dynamic simulation Single-point diamond turning Gallium arsenide ANISOTROPY Ductile response
• 年，卷（期）: nmzzyjlyw_2020,（4）
• 页码范围: 239-250
• 页数: 12页
• 分类号: TN3

摘要

In this paper,molecular dynamic(MD)simulation was adopted to study the ductile response of single-crystal GaAs during single-point diamond turning(SPDT).The variations of cutting temperature,coordination number,and cutting forces were revealed through MD simulations.SPDT experiment was also carried out to qualitatively validate MD simulation model from the aspects of normal cutting force.The simulation results show that the fundamental reason for ductile response of GaAs during SPDT is phase transition from a perfect zinc blende structure(GaAs-I)to a rock-salt structure(GaAs-II)under high pressure.Finally,a strong anisotropic machinability of GaAs was also found through MD simulations.