THE ELECTRON BEAM MELTING OF BERYLLIUM, BORON, BORON CARBIDE, TANTALUM CARBIDE, TITANIUM CARBIDE, TUNGSTEN, AND ZIRCONIUM DIBORIDE. Quarterly Progress Report No. 7 for November 1, 1959-January 31, 1960

Technical Report · Mon Feb 01 00:00:00 EST 1960

OSTI ID:4147385

Seagle, S R; Bertea, O

No further activity is reported in phase I; for information concerning activities in this phase see Quarterly Reports I through V. in phase II, beryllium extrusions were tested at elevated temperatures to deternine the melting ratio and ductility. In phase III, a tungsten ingot hardness of 275 BHN is reported for a sample prepared by triple electron beam melting. Machinable hafnium ingots were produced by double electron beam melting; however, ingots produced by arc melting fnom sponge were brittle and could not be machined. Data on physical properties and chemical analyses of hafnium ingots are included. Data are also included on electron beam and arc melted vanadium ingots. In phase IV, procurement activities concerning elements for use in this phase are reported. (For preceding period see NP-8279.) (J.R.D.)

• Research Organization: Mallory-Sharon Metals Corp., Niles, Ohio
• DOE Contract Number: AF33(616)-5603
• NSA Number: NSA-14-011950
• OSTI ID: 4147385
• Report Number(s): NP-8447
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: United States
• Language: English

Related Subjects

METALS, CERAMICS, AND MATERIALS
BERYLLIUM
BORON
BORON CARBIDES
BRITTLENESS
DUCTILITY
ELECTRIC ARCS
ELECTRON BEAMS
EXTRUSION
HAFNIUM
HARDNESS
HIGH TEMPERATURE
MACHINING
MATERIALS TESTING
MELTING
QUALITATIVE ANALYSIS
RODS
SAMPLING
SOLUBILITY
TANTALUM CARBIDES
TITANIUM CARBIDES
TUNGSTEN
VANADIUM
ZIRCONIUM BORIDES