FABRICATION OF BERYLLIUM WIRE. Progress Report No. 3 for February 16 to April 16, 1959. Technical Report No. 150

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4095618

Gross, Jr, A G; O'Rourke, R G; Beaver, W W

True-stress true-strain tensile properties below 8OO deg F were investigated. The results indicated reproducible ductile behavior as low as 750 deg F, allowing the use of lower working temperatures, which should favor more efficient lubrication in the drawing die. Several fixturing improvements were made for use on the draw-bench. Drawing experiments produced rod at 0.144-in. diameter (drawn from 0.252-in. diameter), a quantitative evaluation of molybdenum disulfide plus powdered graphite for lubrication, pointing techniques, and a cleaning technique. These experiments also proved certain procedures unacceptable. Tensile testing of drawn stock substantiated the basic applicability of the Power Law of Strain Hardening. Metallographic and x ray studies showed the development of crystal arrangements quite similar to those found in extruded beryllium. Initial heat-treating experiments provided an optimistic suggestion of control of mechanical properties through thermal treatment after drawing. (For preceding period see AD-215613.) (auth)

• Research Organization: Brush Beryllium Co., Cleveland
• NSA Number: NSA-15-006370
• OSTI ID: 4095618
• Report Number(s): AD-217515
• Country of Publication: United States
• Language: English

Related Subjects

BERYLLIUM
CLEANING
CONFIGURATION
CRYSTALS
DEFORMATION
DIES
DUCTILITY
EXTRUSION
GRAPHITE
HEAT TREATMENTS
HIGH TEMPERATURE
LUBRICATION
MATERIALS TESTING
MECHANICAL PROPERTIES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM SULFIDES
POWDERS
PRODUCTION
RODS
STRESSES
TEMPERATURE
TENSILE PROPERTIES
THICKNESS
WIRES
X RADIATION