Finite element modeling of machining of hydrogenated Ti-6Al-4V alloy

被引：21
|
作者：
Yang, S. B. [1 ]
Xu, Jiuhua [1 ]
Fu, Yucan [1 ]
Wei, Weihua [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2012年 / 59卷 / 1-4期
基金：
中国国家自然科学基金;
关键词：
Hydrogenation; Titanium alloy; Constitutive equation; FEM; High-speed machining; CHIP FORMATION; TITANIUM; MACHINABILITY; SIMULATION; MECHANISM;
D O I：
10.1007/s00170-011-3479-z
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The present study is undertaken to investigate the effect of hydrogen on the cutting performance of Ti-6Al-4V alloy by FEM. Mechanical behaviors of hydrogenated Ti-6Al-4V alloy are studied at elevated temperatures and high strain rates with split Hopkinson pressure bar. The Johnson-Cook model was developed combined with quasi-static experimental data. A numerical model is developed to simulate the cutting process. The results of the experiments and simulations agreed well. The results demonstrate that the presence of hydrogen has a significant effect on the cutting forces and temperature, and the cutting forces and temperature increase first and then decreased gradually with the increasing of hydrogen contents. The simulation results show that titanium alloys with 0.3% hydrogen have better machinability at high cutting speed.
引用
收藏
页码：253 / 261
页数：9
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