Elasticity of Mo-Re and W-Re alloys under hydrostatic pressure

Journal Article · Fri May 01 04:00:00 EDT 1981 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.329159· OSTI ID:6209027

Katahara, K W; Manghnani, M H; Devnani, N

The elastic moduli of single crystals of Mo-16%Re, Mo-29% Re, and W-11% Re have been measured to 0.5 GPa (5 kbar) hydrostatic pressure at room temperature. The composition dependence of the pressure derivatives of the moduli follows the trends established for Nb-Mo and Ta-W alloys. This finding was unexpected since the shear modulus, C' = (C/sub 11/-C/sub 12/)/2 has a sharp peak in its composition dependence at e/a = 6.0. The results are explained in terms of the differing effects of compression on different d-electron subbands. Because dC'/dP decreases with increasing Re content, it is also suggested that the compositional range for stability of the bcc structure decreases with increasing pressure.

• Research Organization: Hawaii Institute of Geophysics, University of Hawaii, Honolulu, Hawaii 96822
• DOE Contract Number: EY-76-S-03-0235
• OSTI ID: 6209027
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:5; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
BCC LATTICES
COMPRESSION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CUBIC LATTICES
ENERGY LEVELS
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
MOLYBDENUM ALLOYS
MONOCRYSTALS
PRESSURE DEPENDENCE
QUANTITY RATIO
RHENIUM ALLOYS
SHEAR
STABILITY
TUNGSTEN ALLOYS