Diffusion of Boron in Alpha Iron

Abstract

Further study of data used in determinations of I-rates of diffusion of boron in austenite and 2-solubilities of boron in the a and 'Y phases of iron and steel' has provided an equation for the diffusion of boron in a iron. In brief, the previously published data were accumulated from the results of deboron- izing (and decarburizing ) experiments carried out in the range of 700° to 1300°C. Diffusion coefficients (D'Y) for boron in austenite were calculated using the Grube solution of Fick's law. However, only solubility values were estimated from the discontin- uous concentration-penetration curves, Fig. 1, which are characteristic of diffusion in two phases.