标题：Ultra High Speed Turning of Inconel 718 with Sialon Ceramic Tools
作者：Zheng, Guangming; Zhao, Jun; Song, Xinyu; Cao, Qingyuan; Li, Yueen
作者机构：[Zheng, Guangming; Zhao, Jun; Song, Xinyu; Cao, Qingyuan] Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Manufacture, Jinan 250061 更多
会议名称：13th International Symposium on Advances in Abrasive Technology/1st Cross-Strait Conference on Precision Machining
会议日期：SEP 19-22, 2010
来源：ADVANCES IN ABRASIVE TECHNOLOGY XIII
关键词：Ultra high speed turning; Wear mechanisms; Serrated chip; Sialon ceramic; tool; Inconel 718
摘要：This paper explores the wear mechanisms of a Sialon ceramic tool in ultra high speed turning of Nickel-based alloy Inconel 718. Microstructures of the chips are also investigated. Stereo optical microscope and scanning electron microscope (SEM) are employed to observe worn surfaces of the tool produced by various wear mechanisms and morphological features of chips. In addition, the elemental compositions of wear products are evaluated by energy-dispersive X-ray spectroscopy (EDS). As a result of the study, wear mechanisms identified in the machining tests involve adhesive wear and abrasive wear. At the initial stage of cutting process, crater wear and flank wear are the main wear patterns. At the rapid wear stage, the SEM and EDS results showed that the adhered elements of Inconel 718 alloy on the tool rake face such as Ni, Fe and Cr accelerated the tool wear rate. Meanwhile, it was found that the chip morphology was serrated type under ultra high speed cutting condition, furthermore, the tendency of serration of the chip increased with the increase in cutting speed and feed rate.