CARBON DIFFUSIVITY IN BCC IRON

All the available data sets for the diffusivity of C in b.c.c. iron ha ve been analyzed statistically The data may not be represented by a si ngle linear Arrhenius expression. The high-temperature data. predomina ntly generated by mass-flow techniques, are significantly greater than an extrapolation of data from below 360 K, which is predominantly gen erated by mechanical and magnetic relaxation techniques. This effect h as been discussed in terms of the effects of magnetic spin ordering on the diffusion jump energy.