THE URANIUM-IRON SYSTEM
An investigation of the U-- Fe system showed that the solubility of iron in solid uranium increases with temperature from about 0.004 wt% (0.018 at.%) at 600 deg C to 0.35 wt% (1.5 at.%) at 805 deg C, the temperature at which the solid solubility curve meets the solidus and also a peritectic horizontal line, where liquid reacts with solid uranium to form the compound U/sub 6/Fe. No discontinuous change in solubility was detected at the transformation of alpha into BETA uranium but at the transformation of BETA into gamma the solubility suddenly increases from 0.1 to 0.2 wt% (0.4 to 0.8 at.%). The liquidus meets the peritectic horizontal at about 5 wt% (18 at.%) iron. The compound U/sub 6/Fe forms a eutectic, which contains about 11 wt% (34 at.%) iron and melts at 725 deg C, with UFe/sub 2/. The compound UFe/sub 2/ melts at 1230 deg C and forms a eutectic, which contains about 47 wt% (78 at.%) iron and melts at 1055 deg C, with iron. (P.C.H.)
- Research Organization:
- Gt. Brit. National Lab., Teddington, Middx., England
- NSA Number:
- NSA-16-029364
- OSTI ID:
- 4789747
- Report Number(s):
- AERE-X/R-376
- Country of Publication:
- United Kingdom
- Language:
- English
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