EFFECT OF O$sub 2$ AND H$sub 2$ ON THE MECHANICAL PROPERTIES OF TANTALUM AND COLUMBIUM AT LOW TEMPERATURES

Journal Article · Fri Feb 01 04:00:00 EST 1963 · Trans. AIME

OSTI ID:4716585

Imgram, A G; Bartlett, E S; Ogden, H R

Notched and unnotched tensile specimens of wrought and recrystallized, oxygenated and hydrogenated Ta and Nb were tested over a range of temperatures selected to encompass the ductile-to-brittle transition. Increasing tlie oxygen content of Ta and Nb increased their strength, and raised their ductility transition temperature, but did not cause a marked deterioration of notch properties below that of commercially pure material. The adverse effects of oxygen were more pronounced for recrystallized structures than for wrought material. The effects of hydrogen were complicated by strain aging or slow strain rate hydrogen embrittlement at -105 un. Concent 85% F. However, in general, hydrogen had only a minor effect on strength, but markedly increased the effective transition temperature and caused a deterioration of notch properties. (auth)

• Research Organization: Battelle Memorial Inst., Columbus, Ohio
• NSA Number: NSA-17-020501
• OSTI ID: 4716585
• Journal Information: Trans. AIME, Journal Name: Trans. AIME Vol. Vol: 227
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BRITTLENESS
COLUMBIUM
DEFORMATION
DUCTILITY
HEAT TREATMENTS
HYDROGEN
HYDROGENATION
LOW TEMPERATURE
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM
NOTCHES
OXIDATION
OXYGEN
QUANTITY RATIO
RECRYSTALLIZATION
TANTALUM
TEMPERATURE
TENSILE PROPERTIES