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Production, scaling and application of nanostructured metal multilayers as post-weld treatment
Citation Link: https://doi.org/10.15480/882.8567
Publikationstyp
Doctoral Thesis
Date Issued
2023
Sprache
English
Author(s)
Advisor
Referee
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2023-09-01
Institute
TORE-DOI
Citation
Technische Universität Hamburg (2023)
Cu/Ni Nanostructured Metal Multilayer coatings are introduced as a new post-weld
treatment method.
Steel specimen with a double V-groove butt-weld are coated with a Cu/Ni NMM
coating with an overall thickness of 9 μm, consisting of a 1 μm Ni base layer, a
nanolaminate structure with a bilayer thickness of 50 nm and Cu and Ni single layer
thicknesses of 15 nm and 35 nm respectively. The coating is electroplated onto the
steel substrate with a single bath method.
The coated steel specimens are tested in tension-tension fatigue and the corresponding
S-N curves are calculated from the fatigue results.
SEM, TEM and EDX investigations provide insights into the material characterization
of the nanolaminate structure and the understanding of NMM failure mechanisms.
treatment method.
Steel specimen with a double V-groove butt-weld are coated with a Cu/Ni NMM
coating with an overall thickness of 9 μm, consisting of a 1 μm Ni base layer, a
nanolaminate structure with a bilayer thickness of 50 nm and Cu and Ni single layer
thicknesses of 15 nm and 35 nm respectively. The coating is electroplated onto the
steel substrate with a single bath method.
The coated steel specimens are tested in tension-tension fatigue and the corresponding
S-N curves are calculated from the fatigue results.
SEM, TEM and EDX investigations provide insights into the material characterization
of the nanolaminate structure and the understanding of NMM failure mechanisms.
Subjects
nanostructured materials
fatigue
welding
post-weld treatment
electrodeposition
DDC Class
620: Engineering
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