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- W429031808 abstract "The interphase spacings λ in the microstructures of most binary and pseudobinary normal metallic eutectics can roughly be quantified with regard to their respective solidification rates according to a general relationship λ 2 .υ = constant (1) the constant being commonly between 10 -10 and 10 -11 cm 3 /s. The constant is an individual value for each eutectic system. It is lowest for simple eutectics forming no intermetallic compounds and having low terminal solid solutions. The constant is raised for systems by three orders of magnitude or more if extensive terminal solid solutions are present. The designation normal relates to similar degrees of undercooling of either phase on a plain-front solidification process at variance with anomaleous eutectics, which solidify at different degrees of undercooling in an uncoupled or weakly coupled manner. A narrow fit for deliberate normal eutectics is disclosed in this pragmatic approach if the concentration differences between the terminal phases in eutectics ΔC E [at%] are attributed to them as a square term according to λ 2 .υ.ΔC 2 E and by the interdiffusion coefficient D according to λ 2 .υ.ΔC 2 E .D ≅ 1.9.10 -12 (cm 5 .s -2 .at %) (2) Stable as well as metastable eutectics follow this relation. These novel findings are explained on the basis of predominant boundary layer diffusion perpendicular to the melt front." @default.
- W429031808 created "2016-06-24" @default.
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- W429031808 date "1999-01-01" @default.
- W429031808 modified "2023-09-26" @default.
- W429031808 title "Predictability of Microstructures in Eutectics" @default.
- W429031808 hasPublicationYear "1999" @default.
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