SDAS, secondary dendritic arms space relation with solidification rate?

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Andrey Borisov

See plot file

Murat Tiryakioḡlu

SDAS follows coarsening laws during solidification and the Fuerer-Wunderlin equation is quite accurate. Hence, SDAS changes with 1/3 power of solidification time (or -1/3 power of solidification rate). Please also keep in mind that the perceived effect of SDAS on properties is only a correlation and NOT causation. The improvement in ductility when SDAS is low is actually a functipn of the cleanness of the metal.

Hope this helps.