Performance analysis and application on Ti-6Al-4V of micro-forging system

• 作者: Yufei GUI Qi LIU Yun ZHU Sulin CHEN Bin SHEN
• 来源期刊: 中国航空学报（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: Special Issue:High Efficiency and Precision Machining Technology
• 页码范围: 188-198
• 页数: 11页
• 语种: 英文

摘要

Micro-forging(MF)is a novel surface modification technology which is capable of smoothening and strengthening the workpiece surface simultaneously.Based on analysis of the mechanism and energy conversion of micro-forging process,an electromagnetically driven micro-forging system is developed.To further grasp the kinetic characteristic of the equipment,a simula-tion model is established and its accuracy is verified.With the help of simulation and experimental results,we propose an input voltage optimization method,which drives the micro-forging head moving in a uniform and stable way.In this study,the influence of MF on surface integrity of Ti-6Al-4V(TC4)is firstly reported.Experimental results show that MF treatment reduces surface roughness(Ra)and increases micro-hardness by 48％and 11.8％at most,respectively.Besides,a compressive stress layer with an amplitude of-1000 MPa and a depth of 0.8 mm is observed.This study analyzes the performance and reveals the potential of micro-forging technology,which lays a solid foundation for expanding its application in TC4 surface modification.