Affiliation:
1. Nanjing University of Aeronautics and Astronautics
Abstract
Ti2AlNb-based alloy is regarded as lightweight high-temperature structural material, which is expected to replace the nickel-base super alloy due to its low density, high elastic modulus, strength retention at elevated temperature, outstanding oxide resistance. However, these excellent properties also make Ti2AlNb to be difficult-to-cut material. In this paper, the milling experiment of Ti2AlNb alloy was carried out using Ti(N,C)-Al2O3 coated cemented carbide tools. SEM and EDS analysis was utilized to observe the worn tools to determine the tool failure modes and wear mechanisms. Tool life when milling Ti2AlNb was short and heavily dependent on the cutting parameters. During milling, coating material of the tool was separated rapidly from the base material. When the cutting speed exceeded 100m/min, serious cracks appeared on the tool surface. Thermal fatigue, adhesive and attrition were the predominant wear mechanisms of the coated tools.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference9 articles.
1. M. Hagiwara1, S. Emura1, A. Araoka, et al: Metals and Material International, Vol. 3(2003), p.65.
2. K. Muraleedharan, T. K. Nandy, D. Banerjee: Intermetallics. Vol. 3(1995), p.187.
3. A. Lasalmonie. Intermetallics: Intermetallics, Vol. 14(2006), p.1123.
4. Y.F. Ge, Y.C. Fu, J.H. Xu: Key Engineering Materials, Vol. 339(2007), p.6.
5. D.K. Aspinwall, R.C. Dewes, A.L. Mantle: Annals of the CIRP 2005, Vol. 54(2005): p.99.
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献