Comparison between methods for predicting maximum solid solubility of transition metals in solvent metal

1　INTRODUCTIONThepredictionofsolidsolubilityofanalloyisasuspendingbutanimportant question .Therearemanymicrocosmictheoriesand goodreviews pub lishedelucidatingtheeffectsofelectronegativity ,atomicdiameterandelectronconcentrationonthesol idsolubility ,respectively1,2 ] .However,theyaredifficulttopredictsolidsolubilitythoughtheycanex plainsomeexperimentalrules.DarkenandGurry3,4 ]proposedatheoremconsideringbothatomicsizeandelectronegativity ,whichgreatlyimprovedtheHume Rothery swork (D …

Comparison between methods for predicting maximum solid solubility of transition metals in solvent metal

It is important to know the maximum solid solubility( C max ) of various transition metals in a metal when one designs multi component alloys. There have been several semi empirical approaches to qualitatively predict the C max , such as Darken Gurry(D G) theorem, Miedema Chelikowsky(M C) theorem, electron concentration rule and the bond parameter rule. However, they are not particularly valid for the prediction of C max . It was developed on the basis of energetics of alloys as a new method to predict C max of different transition metals in metal Ti, which can be described as a semi empirical equation using the atomic parameters, i e, electronegativity difference, atomic diameter and electron concentration. It shows that the present method can be used to explain and deduce D G theorem, M C theorem and electron concentration rule.