THE PREPARATION AND PROPERTIES OF DISPERSION HARDENED URANIUM POWDER PRODUCTS. Quarterly Technical Report for the Perid Ending September 30, 1959

Technical Report · Thu Oct 15 04:00:00 EDT 1959

OSTI ID:4179159

Arbiter, W

Studies of the effect of UO/sub 2/ dispersions in uranium metal upon properties which exhibit resistance to radiation damage were continued. Procedures were developed for preparing uranium powders of particle size less than 5 mu by hydride decomposition, and methods were developed for controlled oxidation of the powders obtained. Equipment for vacuum hot pressing and/or extrusion of powders was designed and fabricated. Samples of dispersion-hardened uranium, containing 13 to 33 vol.% uranium oxide, were prepared by extrusion in the gamma uranium temperature range. These samples were subjected to thermal cycling tests through the alpha - beta transformation temperature using a total cycle time of 15 to 20 min. Dimensional stability was observed to be superior to thai of wrought, unalloyed uranium. Transverse bending tests revealed the hightemperature strength of the dispersion-hardened compositions to be substantially greater than that of wrought, unalloyed uranium. (For preceding period see NDA-21121.) (C.J.G.)

• Research Organization: Nuclear Development Corp. of America, White Plains, N.Y.
• NSA Number: NSA-14-008704
• OSTI ID: 4179159
• Report Number(s): NDA-2112-4
• Country of Publication: United States
• Language: English

Related Subjects

COMPACTING
CONTROL
DISPERSIONS
EXTRUSION
GRAIN SIZE
HARDNESS
HEAT TREATMENTS
HOT WORKING
METALS, CERAMICS, AND MATERIALS
OXIDATION
PHASE DIAGRAMS
POWDERS
PREPARATION
PRESSURE
QUANTITY RATIO
RADIATION EFFECTS
TEMPERATURE
TEMPERING
TENSILE PROPERTIES
URANIUM
URANIUM DIOXIDE
VACUUM