Secondary and tertiary dendrite arm spacing relationships in directionally solidified Al-Si alloys View Full Text


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Article Info

DATE

1993-02

AUTHORS

R. N. Grugel

ABSTRACT

Secondary, λ2, and tertiary, λ3, dendrite arm spacings have been measured from Al-Si alloys which were directionally solidified as functions of growth velocity,V, temperature gradient,G, and composition,Co. Both λ2 and λ3 decreased as the imposed growth velocity and silicon concentrations were increased, and for each function a systematic variance in the rate was seen. Complications with measuring secondary arm spacings are shown and it was found that the tertiary arm data agree much better with coarsening theory, the implication being that λ3, when measurable, is a more representative and reliable measure of the solidification history than λ2. More... »

PAGES

677-683

References to SciGraph publications

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  • 1979-09. Diffusion in the semi-solid region during dendritic growth in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1988-01. Variation of dendrite arm spacing in Al-rich Zn-Al off-eutectic alloys in JOURNAL OF MATERIALS SCIENCE
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  • 1988-12. Dendritic solidification in binary alloys in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1975-01. The dendrite arm spacings of aluminum-copper alloys solidified under steady-state conditions in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1990-01. Dendrite arm climb by temperature gradient zone melting during solidification of a high-speed tool steel in METALLURGICAL AND MATERIALS TRANSACTIONS A
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    http://scigraph.springernature.com/pub.10.1007/bf01151244

    DOI

    http://dx.doi.org/10.1007/bf01151244

    DIMENSIONS

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