Cristin-resultat-ID: 1959349
Sist endret: 3. februar 2022, 15:31
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Wire arc additive manufacturing of AA5183 with TiC nanoparticles

Bidragsytere:
  • Geir Langelandsvik
  • Magnus Carl Fredrik Eriksson
  • Odd M. Akselsen og
  • Hans Jørgen Roven

Tidsskrift

The International Journal of Advanced Manufacturing Technology
ISSN 0268-3768
e-ISSN 1433-3015
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Trykket: 2021
Sider: 1 - 12
Open Access

Importkilder

Scopus-ID: 2-s2.0-85119274844

Beskrivelse Beskrivelse

Tittel

Wire arc additive manufacturing of AA5183 with TiC nanoparticles

Sammendrag

Aluminium alloys processed by wire arc additive manufacturing (WAAM) exhibit a relatively coarse microstructure with a columnar morphology. A powerful measure to refine the microstructure and to enhance mechanical properties is to promote grain refinement during solidification. Addition of ceramic nanoparticles has shown great potential as grain refiner and strengthening phase in aluminium alloys. Thus, an Al-Mg alloy mixed with TiC nanoparticles was manufactured by the novel metal screw extrusion method to a wire and subsequently deposited by WAAM. Measures to restrict oxidation of magnesium during metal screw extrusion were examined. Purging of CO2 gas into the extrusion chamber resulted in a remarkable reduction in formation of MgO and Mg(OH)2. TiC decomposed to Al3Ti during WAAM deposition, leading to a significant grain refinement of 93% compared to a commercial benchmark. The presence of remaining TiC nanoparticles accounted for an increased hardness of the WAAM material through thermal expansion mismatch strengthening and Orowan strengthening. Exposure of TiC to moisture in air during metal screw extrusion increased the internal hydrogen content significantly, and a highly porous structure was seen after WAAM deposition.

Bidragsytere

Geir Langelandsvik

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Magnus Carl Fredrik Eriksson

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Odd Magne Akselsen

Bidragsyterens navn vises på dette resultatet som Odd M. Akselsen
  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Hans Jørgen Roven

  • Tilknyttet:
    Forfatter
    ved Institutt for materialteknologi ved Norges teknisk-naturvitenskapelige universitet
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