Abstract
The nano-cutting process of metallic glass (Zr52Cu20Ni16Ni12) processed at room temperature was studied by molecular dynamics simulation in this paper. At different cutting speeds, the microstructure of metallic glass, cutting force, strain morphology of cutting zone, temperature change of cutting zone and its influence on the quality of machined surface were analyzed. The simulation results show that the cutting speed has little effect on the content of Voronoi polyhedron in the cutting area of metallic glass. The cutting force increases significantly with the increase of cutting speed. The shape of strain deformation in the cutting zone of metallic glass material is significantly affected by the cutting speed, and the influence depth of strain is deepened with the increase of cutting speed. The increase of cutting speed has a significant effect on the temperature of the cutting zone of metallic glass, and the temperature of atoms in the cutting zone increases rapidly. The cutting speed has a significant impact on the surface quality of metal glass cutting. The surface quality of metal glass cutting becomes worse with the increase of cutting speed. In particular, the initial stage of plastic deformation in metal glass cutting process is simulated and analyzed, and the formation and evolution of its shear band and free volume are simulated and studied.
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Funding
This research was supported by National Natural Science Foundation of China (Grant No. 52005346, 52005347, 52275455, and U1908230), Natural Science Foundation of Liaoning Province (Grant No. 2021-BS-149), Scientific Research Funding Project of Liaoning Provincial Department of Education (Grant No. LQGD2020017), General Project of Basic Scientific Research Projects for Higher Education Institutions of Liaoning Provincial Department of Education (Grant No. LJKMZ20220459), Project of Liaoning Province Applied Basic Research Program (Grant No. 2022JH2/101300214), and Special Fund for Tackling Key Scientific and Technological Problems in Liaoning Province (Grant No. 2021JH1/10400077).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Yin Liu, Xiaoqing Cui, Xingwei Sun, Fei Pan, and Hongxun Zhao. The first draft of the manuscript was written by Xiaoqing Cui, Yin Liu, and Yadong Gong. Experimental tests were carried out by Heran Yang, Zewei Yuan, Zhixu Dong, and Weijun Liu. All authors read and approved the final manuscript.
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Liu, Y., Cui, X., Sun, X. et al. Investigations into the effect of cutting speed on nano-cutting of metallic glass by using molecular dynamics simulation analysis. Int J Adv Manuf Technol 127, 5253–5263 (2023). https://doi.org/10.1007/s00170-023-11884-2
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DOI: https://doi.org/10.1007/s00170-023-11884-2