标题：Cutting performance and wear mechanisms of an Al2O3-based micro-nano-composite ceramic tool
作者：Zhou, Yonghui ;Zhao, Jun ;Ai, Xing
作者机构：[Zhou, Yonghui ;Zhao, Jun ;Ai, Xing ] Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Sha 更多
会议名称：9th Asia-Pacific Conference on Materials Processing, APCMP 2010
会议日期：July 7, 2010 - July 10, 2010
来源：Key Engineering Materials
摘要：An Al2O3-based composite ceramic cutting tool material reinforced with (W, Ti)C micro-particles and Al2O3micro-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 Al2O3(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 Al2O3nano-particles.
© (2010) Trans Tech Publications, Switzerland.