dc.identifier.uri |
http://dx.doi.org/10.15488/13142 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/13247 |
|
dc.contributor.author |
Viebranz, Vincent Fabian
|
|
dc.contributor.author |
Hassel, Thomas
|
|
dc.contributor.author |
Maier, Hans Jürgen
|
|
dc.date.accessioned |
2022-12-12T14:52:30Z |
|
dc.date.available |
2022-12-12T14:52:30Z |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Viebranz, V.F.; Hassel, T.; Maier, H.J.: Microstructural Investigation of a FeMnAlNi Shape Memory Alloy Processed by Tungsten Inert Gas Wire and Arc Additive Manufacturing. In: Metals : open access journal 12 (2022), Nr. 10, 1731. DOI: https://doi.org/10.3390/met12101731 |
|
dc.description.abstract |
In the present study, tungsten inert gas wire and arc additive manufacturing was used to process an iron-based FeMnAlNi shape memory alloy. By a layer-by-layer method, a wall structure with a length of 60 mm and a height of 40 mm was generated. Bidirectional welding ensured grain growth parallel to the building direction. To maintain a nearly constant temperature–time path upon cooling, the structure was fully cooled after each weld to room temperature (298 K). With this approach, an anisotropic microstructure with a grain length of up to 8 mm (major axis) could be established. The grain morphology and formed phases were investigated by optical microscopy and scanning electron microscopy. The images revealed a difference in the orientation with respect to the building direction of the primarily formed γ grains along the grain boundaries and the secondarily formed γ grains in the heat-affected zones. Subgrains in the α matrix were observed also by scanning electron microscopy. With X-ray diffraction, the preferred orientation of the α grains with respect to the building direction was found to be near ⟨100⟩. Overall, an anisotropic polycrystalline material with a columnar texture could be produced, with a preferred grain orientation promising high values of transformation strains. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Basel : MDPI |
|
dc.relation.ispartofseries |
Metals : open access journal 12 (2022), Nr. 10 |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
iron-based shape memory alloy |
eng |
dc.subject |
FeMnAlNi |
eng |
dc.subject |
tungsten inert gas welding |
eng |
dc.subject |
wire and arc additive manufacturing |
eng |
dc.subject |
microstructure |
eng |
dc.subject |
grain morphology |
eng |
dc.subject |
texture |
eng |
dc.subject |
thermomagnetization |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Microstructural Investigation of a FeMnAlNi Shape Memory Alloy Processed by Tungsten Inert Gas Wire and Arc Additive Manufacturing |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2075-4701 |
|
dc.relation.doi |
https://doi.org/10.3390/met12101731 |
|
dc.bibliographicCitation.issue |
10 |
|
dc.bibliographicCitation.volume |
12 |
|
dc.bibliographicCitation.firstPage |
1731 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|