The influence of particle shape on the non-isothermal kinetics of precipitate dissolution

摘要: Abstract Based on the theory of precipitate dissolution kinetics proposed by Whelan, two expressions suitable for use under non-isothermal conditions were derived. The first one arises from transient part diffusion field and it is found to be identical that known as three-dimensional kinetic law, being instead reflection a one-dimensional process. second relationship which essentially steady-state field, better describes situation, corresponding model function in integrated form: f(y)=1 -(1-y) 2 3 . solution was successfully applied describing behaviour disc-shaped G.P. zones 2219 aluminium conditions, while valid description, same spherical ordered domains αCuAl alloys.