标题：Study on fracture performance of in-situ growth whisker toughened composite ceramic tool
作者：Chong, Xuewen; Huang, Chuanzhen; Zou, Bin; Xu, Liang; Zhao, Guolong; Liu, Hanlian
作者机构：[Huang, Chuanzhen] Shandong Univ, Sch Mech Engn, Ctr Adv Jet Engn Technol CaJET, Jinan 250061, Shandong, Peoples R China.; Shandong Univ, Minist Edu 更多
会议名称：8th CHINA-JAPAN International Conference on Ultra-Precision Machining (CJUMP 2011)
会议日期：NOV 20-22, 2011
来源：ULTRA-PRECISION MACHINING TECHNOLOGIES
关键词：ceramic tool; tool fracture; fracture performance; mechanism
摘要：Three kinds of whisker toughened composite ceramic tools were prepared by carbothermal reduction process and their fracture performance was investigated in cutting the quenched 45 steel. The results suggest that the ratio of C to N has an effect on the fracture resistance of ceramic tool, and the whisker in tool material can inhibit the crack propagation and desquamation of grains. At the low cutting speed, the main fracture mode was conchoidal desquamation on the tool rake face and severe oxidation wear and some diffusion wear happened. At the medium cutting speed or high cutting speed, a combination of mechanical load and thermal load applied on the tool and adhesion was caused between workpiece material and tool material, and so the fracture mode was break-off of the cutting edge.