标题：Cutting Performance and Wear Mechanisms of an Al(2)O(3)-Based Micro-Nano-Composite Ceramic Tool
作者：Zhou, Yonghui; Zhao, Jun; Ai, Xing
作者机构：[Zhou, Yonghui; Zhao, Jun; Ai, Xing] Shandong Univ, Key Lab High Efficiency & Clean Mech Manufacture, Sch Mech Engn, Jinan 250061, Peoples R China.
会议名称：9th Asia-Pacific Conference on Materials Processing
会议日期：JUN 07-10, 2010
来源：ADVANCES IN MATERIALS PROCESSING IX
关键词：Ceramic cutting tools; Cutting performance; Tool life; Wear mechanisms
摘要：An Al(2)O(3)-based composite ceramic cutting tool material reinforced with (W, Ti)C micro-particles and Al(2)O(3) micro-nano-particles was fabricated by using hot-pressing technique, the composite was denoted as AWT. The cutting performance, failure modes and mechanisms of the AWT micro-nano-composite ceramic tool were investigated via continuous turning of hardened AISI 1045 steel in comparison with those of an Al(2)O(3)/(W, Ti)C micro-composite ceramic tool SG-4 and a cemented carbide tool YS8. Worn and fractured surfaces of the cutting tools were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results of continuous turning revealed that tool lifetime of the AWT ceramic tool was higher than that of the SG-4 and YS8 tools at all the tested cutting speeds. The longer tool life of the AWT composite ceramic tool was attributed to its synergistic strengthening/toughening mechanisms induced by the (W, Ti)C micro-particles and Al(2)O(3) nano-particles.