Article ID Journal Published Year Pages File Type
1620814 Journal of Alloys and Compounds 2010 4 Pages PDF
Abstract
An analytical treatment of soft impingement has been developed for solid-state precipitation in an isothermal process following the basic assumptions (i.e., a two-stage transformation including a site saturation of nucleation, an isotropic growth and a linear concentration gradient in front of the precipitate/matrix interface). Based on the analytical treatment for soft impingement, a new approach for deducing activation energy for diffusion Q was proposed. The isothermal recipe was mainly determined by two parameters, i.e., the mean size of the second phase rf and the starting time for soft impingement t1. The method has been successfully applied to deduce Q for isothermal transformations in Al-0.2 wt.%Sc alloy and Fe-0.24C-0.93Mo alloy.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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