Abstract
We numerically simulated and experimentally studied the interfacial carbon diffusion between diamond tool and workpiece materials. A diffusion model with respect to carbon atoms of diamond tool penetrating into chips and machined surface was established. The numerical simulation results of the diffusion process reveal that the distribution laws of carbon atoms concentration have a close relationship with the diffusion distance, the diffusion time, and the original carbon concentration of the work material. In addition, diamond face cutting tests of die steels with different carbon content are conducted at different depth of cuts and feed rates to verify the previous simulation results. The micro-morphology of the chips is detected by scanning electron microscopy. Energy dispersive X-ray analysis was proposed to investigate the change in carbon content of the chips surface. The experimental results of this work are of benefit to a better understanding on the diffusion wear mechanism in single crystal diamond cutting of ferrous metals. Moreover, the experimental results show that the diffusion wear of diamond could be reduced markedly by applying ultrasonic vibration to the cutting tool compared with conventional turning.
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Funded by the National High-Tech R&D Program (863 Program) of China ( No. 2012AA040405)
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Zou, L., Zhou, M. Experimental investigation and numerical simulation on interfacial carbon diffusion of diamond tool and ferrous metals. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 307–314 (2016). https://doi.org/10.1007/s11595-016-1368-x
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DOI: https://doi.org/10.1007/s11595-016-1368-x