Casting Aluminum Alloys by unknow

Casting Aluminum Alloys by unknow

Author:unknow
Language: eng
Format: epub
ISBN: 9780128121146
Publisher: Elsevier Ltd.
Published: 2019-08-15T00:00:00+00:00


Figure 3.17 Changes in the experimentally determined and theoretically calculated factor 1/f for copper and zinc [1]: (1, 2) alloy Al + 4.5%Cu + 1.5%Mg; (3, 4) alloy Al + 6%Zn + 2.8Mg; (1, 4) calculations, (2, 3) experiment.

In the case of ternary solid solutions, the initial concentration distribution for alloying elements was supposed to be sinusoidal. The solution of the Fick's second law for a ternary system can be written as follows:

(3.26)

where Cm1 and Cm2 stand for the changes in initial deviation from the average concentration of components and in any point at a distance × from the dendrite cell boundary, τ is the annealing time, and coefficients



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