Cristin-resultat-ID: 1021931
Sist endret: 5. april 2013, 11:05
NVI-rapporteringsår: 2013
Resultat
Vitenskapelig artikkel
2013

EFFECT OF LANTHANUM ON GRAIN REFINEMENT OF CASTING ALUMINUM-COPPER ALLOY

Bidragsytere:
  • D Yao
  • Feng Qiu
  • Q Jiang
  • Yanjun Li og
  • Lars Arnberg

Tidsskrift

International Journal of metalcasting
ISSN 1939-5981
e-ISSN 2163-3193
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2013
Volum: 7
Hefte: 1
Sider: 49 - 54

Importkilder

Isi-ID: 000314076400006
Scopus-ID: 2-s2.0-84872509645

Beskrivelse Beskrivelse

Tittel

EFFECT OF LANTHANUM ON GRAIN REFINEMENT OF CASTING ALUMINUM-COPPER ALLOY

Sammendrag

The influence of lanthanum (La) addition on the solidification structure of a casting Al-Cu alloy has been studied. It is found that the addition of 0.3 wt.% La has a significant grain refining effect on the alloy. Microstructure characterization reveals that a large number of globular grains have fine block-shaped Al-Ti-V-La particles in the centers. It is suggested that the dispersed Al20(Ti,V)2La particles precipitated in the aluminum melt have acted as heterogeneous nucleation sites for the a-Al grains during solidification. Moreover, during the growth of a-Al grains, La will be accumulated in the liquid of solidification front due to segregation. Another influence of La on the grain refinement is attributed to the restriction effect of La on the grain growth of a-Al grains during solidification. Keywords: Al-Cu alloy, grain refinement, rare earth, heterogeneous nucleation, Lanthanum.

Bidragsytere

D Yao

  • Tilknyttet:
    Forfatter
    ved Jilin University

Feng Qiu

  • Tilknyttet:
    Forfatter
    ved Jilin University

Q Jiang

  • Tilknyttet:
    Forfatter
    ved Jilin University

Yanjun Li

  • Tilknyttet:
    Forfatter
    ved Metallproduksjon og prosessering ved SINTEF AS

Lars Erik Arnberg

Bidragsyterens navn vises på dette resultatet som Lars Arnberg
  • Tilknyttet:
    Forfatter
    ved Institutt for materialteknologi ved Norges teknisk-naturvitenskapelige universitet
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