Cristin-resultat-ID: 1043769
Sist endret: 30. oktober 2017, 20:12
NVI-rapporteringsår: 2013
Resultat
Vitenskapelig artikkel
2013

Muon kinetics in heat treated Al (–Mg)(–Si) alloys

Bidragsytere:
  • Sigurd Wenner
  • Katsuhiko Nishimura
  • Kenji Matsuda
  • Teiichiro Matsuzaki
  • Dai Tomono
  • Francis L. Pratt
  • mfl.

Tidsskrift

Acta Materialia
ISSN 1359-6454
e-ISSN 1873-2453
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2013
Volum: 61
Hefte: 16
Sider: 6082 - 6092
Open Access

Importkilder

Scopus-ID: 2-s2.0-84882921630
Isi-ID: 000324449700015

Beskrivelse Beskrivelse

Tittel

Muon kinetics in heat treated Al (–Mg)(–Si) alloys

Sammendrag

Al–Mg–Si alloys are heat-treatable and rely on precipitation hardening for their mechanical strength. We have employed the technique of muon spin relaxation to further our understanding of the complex precipitation sequence in this system. The muon trapping kinetics in a material reveals a presence of atom-sized defects, such as solute atoms (Mg and Si) and vacancies. By comparing the muon kinetics in pure Al, Al–Mg, Al–Si and Al–Mg–Si when held at different temperatures, we establish an interpretation of muon trapping peaks based on different types of defects. Al–Mg–Si samples have a unique muon trapping peak at temperatures around 200 K. This peak is highest for samples that have been annealed at 70–150 °C, which have microstructures dominated by a high density of clusters/Guinier–Preston zones. The muon trapping is explained by the presence in vacancies inside these structures. The vacancies disappear from the material when the clusters transform into more developed precipitates during aging.

Bidragsytere

Sigurd Wenner

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

Katsuhiko Nishimura

  • Tilknyttet:
    Forfatter
    ved Toyama Daigaku

Kenji Matsuda

  • Tilknyttet:
    Forfatter
    ved Toyama Daigaku

Teiichiro Matsuzaki

  • Tilknyttet:
    Forfatter
    ved Riken

Dai Tomono

  • Tilknyttet:
    Forfatter
    ved Riken
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