Abstract
A novel, environmentally friendly, fast, and flexible polishing process for Nitinol parts is presented in this study. Nitinol samples with both superelastic and shape memory properties at room temperature were investigated. The chemical contamination and surface roughness of superelastic Nitinol plates were examined before and after plasma electrolytic polishing. The shift in phase transformation temperature and tensile strength before and after the polishing process were analysed using Nitinol wire with shape memory properties. The obtained experimental results were compared to the data obtained on reference samples examined in the as-received condition. It was found that plasma electrolytic polishing, when the right process parameters are applied, is capable of delivering Nitinol parts with extremely high surface quality. Moreover, it was experimentally proven that plasma electrolytic polishing does not have a negative impact on functionality or mechanical properties of polished parts.
Highlights
The shape memory effect was already known in Au-Cd and Cu-Zn alloys [1], the discovery of the superelastic and shape memory alloy (SMA) Nitinol caused significant changes in the industrial world
This study investigates the changes of the surface roughness, phase transformation temperatures, mechanical properties, and chemical composition of Nitinol wire and flat plates before and after plasma electrolytic polishing (PeP)
Since there was no information concerning whether PeP causes any chemical contamination of Nitinol samples, and if the contamination level depended on the exposure time, each plate was polished in two steps, i.e., one end of a single plate was polished for a longer/shorter time than the other end of the same plate
Summary
The shape memory effect was already known in Au-Cd and Cu-Zn alloys [1], the discovery of the superelastic and shape memory alloy (SMA) Nitinol caused significant changes in the industrial world. Process [41,42,43,44],temperature causing tremendous changes in the transformation of the can other arguehand, that by applying such a reactive high voltage as required forvaria successful manufactured parts.One. On the titanium is highly and tends to form process, the temperature of the workpiece would be exceedingly high, and c ous precipitates, affecting the transformation temperature as well as the homogeneity negatively affect properties of functional materials such as Nitinol. One can argue that by applying such a high voltage as required for a successful PeP process, the temperature of the workpiece would be exceedingly high, and could negatively affect properties of functional materials such as Nitinol. This study investigates the changes of the surface roughness, phase transformation temperatures, mechanical properties, and chemical composition of Nitinol wire and flat plates before and after PeP.
Sign-in/Register to view highlights & summary 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 callDisclaimer: 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.
