Surface quality of laser rod end melted shape-memory Nitinol preforms
- The shape-memory Nitinol as a nickel-titanium alloy is widely used in actuator and medical applications. However, the connection of a flange to the rod is a critical point. Therefore, laser rod end melting enables material accumulations to generate a preform at the end of a rod, followed by die forming, so that the flange can be generated. This process has been successfully applied on 1.4301 steel. This study is aimed to investigate laser rod end melting of shape-memory Nitinol regarding the resultant surface quality of the preforms. The results showed that spherical preforms could be generated without visible surface discoloration due to oxidation. By using different scan rates, different solidification conditions occurred which led to significantly different surface structures. These findings show that laser rod end melting can principally be applied on Nitinol to generate preforms for flanges whereby the surface quality depends on the solidification conditions.
Author: | Yang Lu, Tim Radel |
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URN: | urn:nbn:de:bsz:mit1-opus4-128540 |
DOI: | https://doi.org/10.48446/opus-12854 |
Parent Title (German): | 12. Mittweidaer Lasertagung |
Publisher: | Hochschule Mittweida |
Place of publication: | Mittweida |
Document Type: | Conference Proceeding |
Language: | English |
Year of Completion: | 2021 |
Publishing Institution: | Hochschule Mittweida |
Contributing Corporation: | Bremer Institut für angewandte Strahltechnik GmbH |
Release Date: | 2021/12/06 |
Tag: | Laser end rod melting; Microstructure; Surface topography |
GND Keyword: | Nitinol; Mikrostruktur |
Issue: | 003 |
Page Number: | 5 |
First Page: | 043 |
Last Page: | 047 |
Open Access: | Frei zugänglich |
Licence (German): | Urheberrechtlich geschützt |