Influence of electropulsing assisted on machining properties of Ti-6Al-4V titanium alloy

作者：Qu, Shengguan; Zhai, Jianshuo^*; Sun, Pengfei; Duan, Chenfeng^*; Li, Xiaoqiang

来源：INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2023.

DOI：10.1007/s00170-023-11291-7

• Ti-6Al-4V titanium alloy
• Electroplastic effect
• Surface quality
• Cutting performance
• Tool life

This paper deals with the concerns of industrial demand for enhancing the machinability of Ti-6Al-4V titanium alloy (TC4). In this regard, the electroplastic effect of high-frequency pulse current can improve the plasticity of the material and reduce the processing resistance of the material. Its application in the processing and manufacturing of difficult-to-machine materials can greatly improve the processing performance. The research compared the effect on turning performance of titanium alloy workpieces after applying 50-400 A (700 Hz) current intensity and 300-1900 Hz (150 A) pulse frequency. Results indicated that the electric pulse-assisted turning (EPT) can promote the plastic flow of grains in the surface layer of Ti-6Al-4V workpiece and then reduce the turning resistance during machining. The residual stress on surface of workpiece after machining can be able to release under thermal effects. In addition, the VB value of tool flank face wear has been reduced in EPT compared to that of conventional turning (CT). It is also found that the change of current intensity has a greater impact in multiple properties during turning process than pulse frequency.