摘要
利用分离式霍普金森压杆(SHPB)实验得到置氢钛合金的流动应力与应变关系,通过数据拟合获得置氢钛合金的Johnson-Cook(J-C)热粘塑性本构模型,应用该模型及有限元分析软件模拟了置氢钛合金切削过程,并进行了相关的验证性切削实验。不同置氢含量钛合金切削力对比显示,置氢工艺改善了钛合金的切削难加工性;高速切削置氢钛合金模拟结果表明,在120m/min切削条件下,置氢能够较大的减小切削力。
This article introduces the flow relationship of TC4 alloy with hydrogenation between stress and strain through Split Hopkinson Pressure Bar（SHPB） experiment and obtains Johnson-Cook（JC） thermo-viscoplastic constitutive equation by using the experimental data.It also simulates the cutting process of titanium alloy with hydrogen by utilizing the equation and finite element analysis software,then carries out the cutting experiments.The simulations prove that the hydrogen technology improves the processability.The hydrogen titanium high-speed cutting simulation results indicate that the hydrogen technology can reduce a lot of cutting force with the cutting speed of 120 m/min.
出处
《机械制造与自动化》
2010年第4期103-105,113,共4页
Machine Building & Automation
