Datum
2020-09-18Schlagwort
600 Technik ElektronenstrahlschweißenMedizintechnikNitinolEdelstahlIntermetallische VerbindungenMetadata
Zur Langanzeige
Aufsatz
Microstructural and mechanical properties of dissimilar nitinol and stainless steel wire joints produced by micro electron beam welding without filler material
Zusammenfassung
Nitinol is a shape memory and superelastic alloy, respectively, and stainless steels are widely used materials in medical engineering, e.g., for implants and medical instruments. However, due to its high price and poor machinability, there is a high demand for dissimilar welding of nitinol components to stainless steel. During welding of titanium-containing alloys, like nitinol, to ferrous metals like stainless steel, intermetallic phases between titanium and iron may form. These phases are brittle and lead to rapid crack formation and/or inferior mechanical properties of the joint. In this study, superelastic nitinol wires are butt-welded with stainless steel wires by means of micro electron beam welding, providing good quality weld seams. Due to a very accurate beam alignment and fast beam deflection, the composition and the level of dilution in the weld metal can be precisely controlled, resulting in a significant reduction of fraction of intermetallic phases. The experiments show that it is possible to produce sound welds without the presence of any cracks on the surface as well as in the cross sections.
Zitierform
In: Welding in the World Volume 64 / Issue 12 (2020-09-18) , S. 2159-2168 ; EISSN 1878-6669Förderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202011182198,
author={Hellberg, Sebastian and Hummel, Joana and Krooß, Philipp and Niendorf, Thomas and Böhm, Stefan},
title={Microstructural and mechanical properties of dissimilar nitinol and stainless steel wire joints produced by micro electron beam welding without filler material},
journal={Welding in the World},
year={2020}
}
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2020-12-02T12:08:23Z 2020-12-02T12:08:23Z 2020-09-18 doi:10.17170/kobra-202011182198 http://hdl.handle.net/123456789/12065 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ micro electron beam welding medical engineering nitinol stainless steel intermetallic phases 600 Microstructural and mechanical properties of dissimilar nitinol and stainless steel wire joints produced by micro electron beam welding without filler material Aufsatz Nitinol is a shape memory and superelastic alloy, respectively, and stainless steels are widely used materials in medical engineering, e.g., for implants and medical instruments. However, due to its high price and poor machinability, there is a high demand for dissimilar welding of nitinol components to stainless steel. During welding of titanium-containing alloys, like nitinol, to ferrous metals like stainless steel, intermetallic phases between titanium and iron may form. These phases are brittle and lead to rapid crack formation and/or inferior mechanical properties of the joint. In this study, superelastic nitinol wires are butt-welded with stainless steel wires by means of micro electron beam welding, providing good quality weld seams. Due to a very accurate beam alignment and fast beam deflection, the composition and the level of dilution in the weld metal can be precisely controlled, resulting in a significant reduction of fraction of intermetallic phases. The experiments show that it is possible to produce sound welds without the presence of any cracks on the surface as well as in the cross sections. open access Hellberg, Sebastian Hummel, Joana Krooß, Philipp Niendorf, Thomas Böhm, Stefan doi:10.1007/s40194-020-00991-3 Elektronenstrahlschweißen Medizintechnik Nitinol Edelstahl Intermetallische Verbindungen publishedVersion EISSN 1878-6669 Issue 12 Welding in the World 2159-2168 Volume 64 false
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