Elastic constants of niobium-zirconium, hafnium, and tungsten alloys

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.325493· OSTI ID:6941838

Frey, M L; Lonnee, J E; Shannette, G W

The adiabatic single-crystalline elastic constants of pure niobium, Nb-Zr, Nb-Hf, and Nb-W alloys were determined in the temperature range 77--298 /sup 0/K. An unusual temperature dependence was noted in the Nb-rich alloys which may be related to the shape of the Fermi surface. Zr and Hf alloying additions decrease the value of C', which indicates decreasing bcc lattice stability. The values of the elastic anisotropy ratio C/sub 44//C' follow the behavior predicted by Fisher, which indicates that the elastic shear moduli are closely related to the filling of the d band. The Debye temperatures theta/sub D/ were calculated, and W additions tend to increase theta/sub D/, while Zr and Hf lower theta/sub D/.

• Research Organization: Department of Metallurgical Engineering, Michigan Technological University, Houghton, Michigan 49931
• OSTI ID: 6941838
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 49:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
BCC LATTICES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CUBIC LATTICES
D STATES
DEBYE TEMPERATURE
ELASTICITY
ELEMENTS
ENERGY LEVELS
HAFNIUM ALLOYS
MECHANICAL PROPERTIES
METALS
MONOCRYSTALS
NIOBIUM
NIOBIUM ALLOYS
REFRACTORY METALS
STABILITY
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
ZIRCONIUM ALLOYS