Investigation of secondary dendrite arm coarsening of Al-Cu-Si alloy

Investigation of secondary dendrite arm coarsening of Al-Cu-Si alloy

Changing of dendritic structure was investigated during isothermal coarsening. A simple equation, lambda sub 2 exp m - lambda sub 2.0 exp m =Kbullet(t-t sub 0 ), describes the isothermal coarsening. In this equation lambda sub 2.0 was determined by interrupted solidification than m and K were calcul...

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Veröffentlicht in:Materials science forum 1999-04, Vol.329-330, p.79-86
Hauptverfasser: Ronto, V, Roosz, A
Format: Artikel
Sprache:eng
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Zusammenfassung:Changing of dendritic structure was investigated during isothermal coarsening. A simple equation, lambda sub 2 exp m - lambda sub 2.0 exp m =Kbullet(t-t sub 0 ), describes the isothermal coarsening. In this equation lambda sub 2.0 was determined by interrupted solidification than m and K were calculated by Csebisev approximation method. The average coarsening parameter was calculated by the method of Tensi and Fuchs and was compared with our results.
ISSN:0255-5476