Next Article in Journal
Effects of High-Intensity Ultrasound on Microstructure and Mechanical Property of In situ TiB2/2A14 Composites
Previous Article in Journal
Analysis of Ductile Fracture Obtained by Charpy Impact Test of a Steel Structure Created by Robot-Assisted GMAW-Based Additive Manufacturing
Open AccessArticle

Research on the Micro-Extrusion Process of Copper T2 with Different Ultrasonic Vibration Modes

1
Faculty of Mechanical & Electronic Information, China University of Geosciences, Wuhan 430074, China
2
School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
4
Shanxi Key Laboratory of Non-Traditional Machining, Xi’an Technological University, Xi’an 710032, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(11), 1209; https://doi.org/10.3390/met9111209 (registering DOI)
Received: 8 October 2019 / Revised: 4 November 2019 / Accepted: 6 November 2019 / Published: 10 November 2019
(This article belongs to the Special Issue Ultrasonic Processing of Alloys)
As an effective method for the fabrication of miniature metallic parts, the development of micro-forming process (MFP) is still restricted by the existence of size effect. To improve the micro-forming performance of metal material, ultrasonic vibration assisted MFP had been studied extensively for its superiorities in improving materials flow stress and reducing interfacial friction. However, from the literature available, the high frequency vibration was usually found to be superimposed on the forming tool while seldom on the workpiece. Our group developed a special porous sonotrode platform which can realize tool vibration and workpiece ultrasonic vibration independently. In this work, ultrasonic micro-extrusion experiments for copper T2 material under tool vibration and the workpiece vibration condition, respectively, were conducted for comparing the micro-forming characteristic of different vibration modes. The micro-extrusion experiment results of copper T2 show that the lower extrusion flow stress, the higher micro-extrusion formability and surface micro-hardness, and more obvious grain refinement phenomenon can be obtained under the workpiece vibration condition compared with that of tool vibration. These findings may enhance our understanding on different ultrasonic forming mechanisms and energy transmission efficiency under two different vibration modes. View Full-Text
Keywords: copper T2; ultrasonic vibration mode; micro-extrusion; tool vibration; workpiece vibration; energy transmission copper T2; ultrasonic vibration mode; micro-extrusion; tool vibration; workpiece vibration; energy transmission
Show Figures

Figure 1

MDPI and ACS Style

Xu, L.; Lei, Y.; Zhang, H.; Zhang, Z.; Sheng, Y.; Han, G. Research on the Micro-Extrusion Process of Copper T2 with Different Ultrasonic Vibration Modes. Metals 2019, 9, 1209.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop