Second phase dissolution

A detailed theoretical study was made of the dissolution of precipitates. The kinetic analyses of the atomic mechanisms included the concurrent effects of diffusion, interface reaction, and curvature, and considered the more complex problems of precipitate arrays and nondepleted matrices. The general formalism thus obtained was used to interpret the results of an experimental investigation of the technologically important problem of the dissolution of “reluctantly soluble” carbides in the Fe-C-V system. It was found that vanadium carbide (and iron carbide as well) were quite easily dissolved while complex alloy sulfides, silicates and oxides (possibly associated with the presence of vanadium) persisted, with little if any dissolution. Previous views of the reasons for poor hardenability were reevaluated in light of these results.

[1]  H. B. Aaron,et al.  Diffusion‐Limited Phase Transformations: A Comparison and Critical Evaluation of the Mathematical Approximations , 1970 .

[2]  The kinetics of growth from solution , 1967 .

[3]  A. Bowen,et al.  Solute diffusion in alpha- and gamma-iron , 1970 .

[4]  R. Tanzilli,et al.  Solution kinetics of CuAl2 in an Al-4Cu alloy , 1970 .

[5]  H. B. Aaron.  Precipitate dissolution and its dependence on growth mode , 1969 .

[6]  G. W. Sears,et al.  The molecular mechanism of solidification , 1964 .

[7]  E. Bain,et al.  Alloying elements in steel , 1966 .

[8]  Frank S. Ham,et al.  Theory of diffusion-limited precipitation , 1958 .

[9]  H. Aaronson,et al.  Growth of grain boundary precipitates in Al-4% Cu by interfacial diffusion , 1968 .

[10]  J. S. Foster,et al.  The dissolution kinetics of Fe3C in ferrite — A theory of interface migration , 1970 .

[11]  A. Brailsford,et al.  Growth of Grain-Boundary Precipitates , 1969 .

[12]  M. Whelan.  On the Kinetics of Precipitate Dissolution , 1969 .

[13]  H. Aaronson,et al.  Growth mechanisms of grain boundary allotriomorphs in Al-4Pct Cu at high homologous temperatures: Interfacial vs direct volume diffusion , 1970 .

[14]  M. Hall,et al.  Dissolution of θ phase in Al-5% Cu , 1970 .

[15]  D. W. Readey,et al.  Molecular diffusion with a moving boundary and spherical symmetry , 1966 .

[16]  R. Lye,et al.  Structure of the ordered compound V6C5 , 1968 .

[17]  R. Tanzilli,et al.  Effects of growth mechanism on solution kinetics , 1970 .