Preliminary Attempts to Produce Randomly Oriented Wrought Beryllium and Their Relation to Texture Development

Technical Report · Wed Jul 06 04:00:00 EDT 1960

DOI:https://doi.org/10.2172/4136508· OSTI ID:4136508

Yans, F. M. ^[1]; Pointu, P. ^[1]

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1. Nuclear Metals, Inc., Concord, MA (United States)

Several experiments were performed utilizing beryllium single crystals and polycrystalline material in an effort to produce randomly oriented wrought beryllium and to relate the deformation modes to texture development during plastic deformation. It was determined that ($$10\bar{1}2$$) type twinning appears to be one of the most predominant modes of deformation at temperatures as high as 1066°C (1950°F). This deformation mode is therefore instrumental in texture development. The prior texture of beryllium appears to affect the development of preferred orientations, espec ally at low reductions. The mechanical properties of compression rolled sheet approach those of upset sheet. The degree of preferred orientations developed by rolling beryllium at 1000°C is greater than that obtained by rolling at 450°C and annealing between each pass at temperatures of about 800°C. To date, that material which has most closely approached randomly oriented wrought beryllium exhibits a ductility of approximately 1%.

• Research Organization: Nuclear Metals, Inc., Concord, MA (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• NSA Number: NSA-15-004288
• OSTI ID: 4136508
• Report Number(s): NMI--1225
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
BERYLLIUM
CONFIGURATION
CRYSTALS
DEFORMATION
DUCTILITY
HIGH TEMPERATURE
MECHANICAL PROPERTIES
MONOCRYSTALS
PRESSURE
ROLLING
SHEETS