Cristin-resultat-ID: 515681
Sist endret: 9. mars 2011, 15:47
Resultat
Vitenskapelig artikkel
2010

The influence of composition and natural aging on clustering during preaging in Al-Mg-Si alloys

Bidragsytere:
  • Malin Torsæter
  • Håkon Stokka Hasting
  • Williams Lefebvre
  • Calin Daniel Marioara
  • John Walmsley
  • S. J. Andersen
  • mfl.

Tidsskrift

Journal of Applied Physics
ISSN 0021-8979
e-ISSN 1089-7550
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2010
Volum: 108
Hefte: 7

Importkilder

Scopus-ID: 2-s2.0-77958486643
Isi-ID: 000283222200051

Beskrivelse Beskrivelse

Tittel

The influence of composition and natural aging on clustering during preaging in Al-Mg-Si alloys

Sammendrag

This work provides a detailed atom probe tomography study of clustering in the Al–Mg–Si system. Focus is on separating and understanding the influence of natural aging, preaging, and alloy composition on the clustering behavior of solute atoms. Two dilute alloys with the same total solute content have been studied, one Mg-rich and one Si-rich. The detrimental effect of natural aging for these alloys is investigated by comparing directly preaged samples to samples stored at room temperature before the preaging treatment. Clusters were identified in the atom probe datasets by the maximum separation method employing heuristically determined input parameters. It was found that seven days of intermediate natural aging gave a five times lower number density of clusters as compared to direct preaging for both alloy types. The clusters were of comparable size but their compositions depended on heat treatment history. Preaging promoted the formation of clusters with an Mg:Si ratio close to 1 in both alloys, while natural aging produced clusters with Mg:Si ratios more similar to those of the alloys.

Bidragsytere

Malin Torsæter

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

Håkon Stokka Hasting

  • Tilknyttet:
    Forfatter
    ved Det Norske Veritas AS
  • Tilknyttet:
    Forfatter
    ved Institutt for fysikk ved Norges teknisk-naturvitenskapelige universitet

Williams Lefebvre

  • Tilknyttet:
    Forfatter
    ved Université de Rouen Normandie

Calin Daniel Marioara

  • Tilknyttet:
    Forfatter
    ved SINTEF AS

John Walmsley

  • Tilknyttet:
    Forfatter
    ved SINTEF AS
  • Tilknyttet:
    Forfatter
    ved Institutt for fysikk ved Norges teknisk-naturvitenskapelige universitet
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