Manufacturing of high-precision surface micro-structures on stainless steel by ultrasonic impact peening

Xuesen Zhao,Jianguo Zhang,Wangjie Hu,Tao Sun,Xiaohui Wang,Junjie Zhang,Dongxu Zhao

doi:10.1007/s00170-021-07528-y

Abstract

Ultrasonic impact peening (UIP) is not only a mature technique of surface treatment, but also a promising method of surface texturing for promoting performance and functionalities of components and devices. In the present work, we demonstrate the feasibility of applying UIP in the manufacturing of high precision surface micro-structures on 316L stainless steel using a YG6 cemented carbide tool. Specifically, analytical investigation of material deformation map under UIP is carried out, which is validated by corresponding finite element simulations based on a combined nonlinear isotropic/kinematic hardening model, as well as experiments performed on home-made UIP apparatus. Finally, surface micro-structures of aligned grooves with a depth of 2 μm and a periodicity of 240 μm are fabricated by using UIP, and are subsequently subjected to linear reciprocating ball-disk sliding tests. Corresponding experimental results show that the micro-structures fabricated by UIP possess comparable accuracy of groove morphology and frictional properties with that fabricated by using ultrasonic elliptical vibration cutting using a single crystal diamond tool. The present work sheds lights on the fabrication of high precision surface micro-structures on ferrous metals by mature UIP technique.

Highlights

Surface texturing is a promising technique for enhancing performance and functionality of components and devices by introducing micro/nano-scale surface structures
Surface micro-structures composed of aligned grooves with a depth of 2 μm and a periodicity of 240 μm are fabricated on 316L stainless steel by using Ultrasonic impact peening (UIP) with a YG6 cemented carbide tool
We demonstrate the feasibility of applying UIP in the fabrication of high precise surface micro-structure on 316L stainless steel using a YG6 cemented carbide tool

Summary

Introduction

Surface texturing is a promising technique for enhancing performance and functionality of components and devices by introducing micro/nano-scale surface structures. Significant friction reduction between rubbing surfaces has been achieved by introducing micro-structures on stainless steel, which is a kind of widely used industrial engineering material for mechanical components [1,2,3,4,5,6]. The non-traditional laser surface texturing (LST) has been widely used to fabricate microstructures on stainless steel for its high efficiency, high homogeneity and low material-selectivity [7,8,9,10,11]. Ultra-precision diamond cutting has been demonstrated as one feasible traditional mechanical machining technique for the fabrication of high precision micro-structures on stainless steel [15,16]. The method of ultrasonic elliptical vibration cutting (UEVC) can significantly promote the machinability of difficult-to-cut materials [20,21,22,23,24], it requires high precision and high cost machining apparatus, as well as high requirement on operating skills

Methods

Results

Conclusion