Sh. Zhang et al., NONEQUILIBRIUM SEGREGATION OF SOLUTE TO GRAIN-BOUNDARY .1. BORON SEGREGATION IN FE-3-PERCENT-SI DURING COOLING, Journal of Materials Science, 29(10), 1994, pp. 2633-2640
The behaviour of boron segregation to grain boundaries in Fe-3%Si has
been studied by means of particle tracking autoradiography. The result
s indicate that (i) the binding energy between boron atoms and grain b
oundaries is 55.7+/-1.7 kJ mol-1; (ii) in contrast to the nature of bo
ron segregation in gamma-Fe, no observable non-equilibrium segregation
of boron to grain boundaries exists in Fe-3%Si alloy during cooling a
nd isothermal holding.