Co-RICH INTERMEDIATE PHASES IN THE Cb-Co SYSTEM

Journal Article · Mon Aug 01 00:00:00 EDT 1960 · Trans. Met. Soc. AIME

OSTI ID:4168093

Saito, S; Beck, P A

Metallographic and x-ray-diffraction study of Nb-Co alloys in the composition range of 7 to 33 at.% Nb, after annealing at 1175 deg C, showed that near 25 at.% Nb an MgNi/sub 2/type hexagonal Laves phase exists in a narrow composition range, and that an MgCu/sub 2/-type cubic Laves phase occurs between approximately 27 and 32.6 at.% Nb. Lattice parameter and density measurements indicated that, in both phases, the deviations from proper Laves stoichiometry resultad from the substitution of cobalt atoms for some of the niobium atoms. The same phases occur at 1000 deg C, together with an additional phase of unknown structure, which appears between the hexagonal Laves phase and the cobaltbase terminal solid solutions. (auth)

• Research Organization: Univ. of Illinois, Urbana
• NSA Number: NSA-14-022083
• OSTI ID: 4168093
• Journal Information: Trans. Met. Soc. AIME, Journal Name: Trans. Met. Soc. AIME Vol. Vol: 218
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANNEALING
ATOMS
COBALT
COBALT ALLOYS
CONFIGURATION
COPPER ALLOYS
DENSITY
DIFFRACTION
HIGH TEMPERATURE
INTERMETALLIC COMPOUNDS
LATTICES
LAVES PHASES
MAGNESIUM ALLOYS
MEASURED VALUES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL ALLOYS
NIOBIUM
NIOBIUM ALLOYS
PHASE DIAGRAMS
QUANTITY RATIO
SOLID SOLUTIONS
STANDARDS
X RADIATION