FUNDAMENTAL AND APPLIED RESEARCH AND DEVELOPMENT IN METALLURGY. Progress Report for January 1960

Technical Report · Sun May 01 04:00:00 EDT 1960

OSTI ID:4155402

Investigation of U-UC systems was continued. Three additional melts were made and extruded. Data are included on the extrusion constants of some U- UC systems for comparison with that of beryllium. Thin specimens of ingot and dingot uramium, uranium - zirconium, molybdenum-uranium, and thorium were irradiated with 31.5 Mev alpha particles. The measured values of alpha particle depth penetration and the width of the He band are tabularly summarized. The stability of retained beta phase in Cr - U, and Cr-Nb-U alloys at 500 deg C was investigated. Results of x-ray examination of these alloys are tabulated together with results of previous work. Results of rapid quench on the retention of beta phase after heat treatment at 720 deg C in Cr-U-V. Fe-Si-U, Cr-Fe-Si, and Nb-U-V alloys are also given. The preparation and thermal analy sis of binary beryllium alloys were continued. Results of thermal analysis of Be-Pa, Be- Si, Re-Ag, and Be- Zr are discussed. Precipitation process in rod fabricated from beryllium powder was studied. Work on calibration of the tensile jig, beryllium single-crystal tensile sample electropolishing, and single-crystal production by vacuummelting was continued. Studies to determine the isotopic interchange in dispersion-type fuel elements with depleted uranium matrix and enriched fuel were continued. Results so far indicate that diffusion in this syatem is negligible. A single crystal of UO/sub 2/ previously deformed by 0.2% compressive strain of 1500 deg C was analyzed for active deformation planes. The slip plane STA111! was considered the most likely of the planes investigated. (For preceding period see NMI-2082.) (J.R.D.)

• Research Organization: Nuclear Metals, Inc., Concord, Mass.
• NSA Number: NSA-14-015899
• OSTI ID: 4155402
• Report Number(s): NMI-2083
• Country of Publication: United States
• Language: English

Related Subjects

ALPHA PARTICLES-- HELIUM-- IRRADIATION-- MOLYBDENUM ALLOYS-- THORIUM-- URANIUM-- URANIUM ALLOYS-- ZIRCONIUM ALLOYS
BERYLLIUM ALLOYS-- PHASE DIAGRAMS-- PREPARATION
BERYLLIUM ALLOYS-- PHASE DIAGRAMS-- PROTACTINIUM ALLOYS-- SILICIDES-- SILVER ALLOYS-- ZIRCONIUM ALLOYS
BERYLLIUM-- CARBIDES-- EXTRUSION-- MELTING-- URANIUM ALLOYS-- URANIUM COMPOUNDS
BERYLLIUM-- CLEANING-- CRYSTALS-- ELECTROLYSIS-- MELTING-- PRODUCTION-- STANDARDS-- TENSILE PROPERTIES-- VACUUM
BERYLLIUM-- FABRICATION-- POWDERS-- PRECIPITATION-- RODS
CHROMIUM ALLOYS-- HEAT TREATMENTS-- HIGH TEMPERATURE-- IRON ALLOYS-- NIOBIUM ALLOYS-- PHASE DIAGRAMS-- SILICIDES-- URANIUM ALLOYS
METALS, CERAMICS, AND OTHER MATERIALS