Abstract
In this study, ultrasonically assisted ring compression test was used to study the frictional behavior of contacting surfaces. Samples of above- and sub-millimeter sizes were prepared using stainless steel 316. Two commonly used lubricants in micro-forming, i.e., MoS2 and graphite powder, were used to lubricate the ring surfaces. The effects of ram speed, die material, ultrasonic vibration amplitude, and specimen size on the friction coefficient and deformation load were studied. In addition, the contribution of material softening and friction reduction on the deformation load decrease was identified using the test data and finite element simulation. The general trend of increase in friction coefficient with miniaturization was observed in ultrasonically assisted micro-ring compression test. However, the percentage of increase in friction coefficient due to miniaturization reduced when ultrasonic vibrations were applied. The results also showed that both friction reduction and material softening phenomena contribute to the decrease of the deformation load; however, the contribution of friction reduction was more than that of material softening.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The International Journal of Advanced Manufacturing Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
