论文信息 - The coarsening of γ' in Ni-Al alloys

The coarsening of γ' in Ni-Al alloys

Abstract The coarsening behaviour of \ gg in an Ni-Al matrix is shown to be in excellent quantitative agreement with all aspects of the Lifshitz-Wagner theory of Ostwald ripening. This system is compared with others for which coarsening data are available and several factors affecting coarsening are discussed. It is concluded that the high symmetry of the cube-shaped \ gg particles and the absence of large coherency strains in the matrix are the factors primarily responsible for the excellent agreement between experiment and theory.

A. Ardell | Alan J. Ardell | R. Nicholson | Richard B. Nicholson | Richard B. Nicholson

[1] C. W. Berghout. The uniaxial magnetic anisotropy of the F.C.C. cobalt precipitate in copper , 1963 .

[2] A. Ardell,et al. On the modulated structure of aged Ni-Al alloys: with an Appendix On the elastic interaction between inclusions by J. D. Eshelby , 1966 .

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

[4] D. Turnbull,et al. Thermodynamics and kinetics of precipitation in the copper-cobalt system , 1966 .

[5] R. A. Oriani. Comments on coherent two-phase equilibrium and Ostwald ripening , 1966 .

[6] M. Kahlweit. Über die Alterung von Niederschlägen durch Umlösung (Ostwald-Reifung) , 1963 .

[7] R. A. Oriani,et al. Ostwald ripening of precipitates in solid matrices , 1964 .

[8] Charles A. Johnson. Generalization of the Gibbs-Thomson equation , 1965 .

[9] I. Lifshitz,et al. The kinetics of precipitation from supersaturated solid solutions , 1961 .

[10] M. Ashby,et al. Diffraction contrast from spherically symmetrical coherency strains , 1963 .

[11] M. Hansen,et al. Constitution of Binary Alloys , 1958 .

[12] John Arents,et al. Thermodynamics of solids , 1962 .

[13] C. A. Mackliet. Diffusion of Iron, Cobalt, and Nickel in Single Crystals of Pure Copper , 1958 .

[14] J. Cahn. Coherent two-phase equilibrium , 1966 .