Study on Machining Single-Crystal Nickel by Molecular Dynamics Simulation
In this paper, molecular dynamics (MD) model is explored to study single-crystal nickel micro-nanomachining mechanism. Accordingly, LAMMPS would implement the simulation of nanometric cutting process, and snapshots at different steps are obtained by VMD and OVITO. On this basis, a reasonable explanation is given to the forming mechanism of chip and surface machined in the machining process of single-crystal nickel. The result of work-piece temperature distribution shows that there is a temperature gradient around the machining zone, where chip part achieved the highest temperature. Moreover, a large number of dislocations are observed. Part of dislocation atoms move forward and generate the chips, taking a lot of heat. Another part of dislocation atoms combine with the work-piece surface atoms with elastic recovery, and form the machined surface.
Hon-Zong Choi, Haedo Jeong, Xiping Xu and Hideki Aoyama
Z. X. Zhu et al., "Study on Machining Single-Crystal Nickel by Molecular Dynamics Simulation", Advanced Materials Research, Vol. 1136, pp. 184-189, 2016
Z. X. Zhu, Y. D. Gong, Z. H. Gan, Y. G. Zhou, G. Q. Yin, "Study on Machining Single-Crystal Nickel by Molecular Dynamics Simulation", Advanced Materials Research, Vol. 806, pp. 184-189, Nov. 2015