SELF DIFFUSION IN IRON
Self-diffusion in high-purity iron (99.97% Fe) is determined over the temperature range from 700 to 1436 deg C. The temperature dependence of the self- diffusion coefficient in face-centered cubic and in body-centered cubic iron can be expressed as follows (in cm/sup 2//sec): gammairon, D = 0.18 exp (-64,500/RT); alpha-iron (paramagnetic), D = 1.9 exp (-57,200/RT); above 790 deg C; and alphairon (ferromagnetic), D = 2.0 exp (-6O,000/RT); below 750 deg C. The diffusivity below the magnetic transformation is lower than expected from an extrapolation of the diffusion data for paramagnetic alpha-iron. (auth)
- Research Organization:
- California Inst. of Tech., Pasadena
- NSA Number:
- NSA-15-021164
- OSTI ID:
- 4048352
- Report Number(s):
- NYO-9428
- Journal Information:
- Acta Met., Journal Name: Acta Met. Vol. Vol: 9
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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