标题：Tool wear mechanisms and micro-channels quality in micro-machining of Ti-6Al-4V alloy using the Ti(C7N3)-based cermet micro-mills
作者：Wang, Yishun ;Zou, Bin ;Huang, Chuanzhen
作者机构：[Wang, Yishun ;Zou, Bin ;Huang, Chuanzhen ] Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong Unive 更多
摘要：The cutting mechanism changes back and forth between ploughing-dominated and shearing-dominated in micro-milling of channel. This study was to research the tool wear mechanisms and micro-channels quality using the Ti(C7N3)-based cermet micro-mills in machining Ti-6Al-4V alloy. Tool wear mechanisms contained the adhesive wear, micro-chipping, oxidative wear, flank wear and diffusion wear. However, the abrasive wear was not discovered, which was a distinct wear mechanism with macro-milling. The higher feed rate induced the tool tip temperature and increased workpiece temperature, and the maximum tool tip temperature was 123.6 °C. Moreover, Tool wear of the micro-mill was improved, and the micro-channels quality also enhanced under the feed rate of 1 μm/flute.
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