Anisotropy of internal friction and modules of elasticity for monocrystalline niobium
Description
Anisotropy of internal friction and modules of elasticity for niobium monocrystals obtained by electron-beam zone melting has been investigated. The investigation has been carried out on the samples of three orientations < 100 >, < 110 >, < 111 > by the torsion pendulum method in the temperature range 20-400 deg C at the torsional oscillation frequency 11-14 Hz and bending oscillation frequency 3-4 Hz. It is shown that in the investigated temperature region the Snook relaxation activation energy 1,17 eV is observed. The value of the relaxation peaks of the internal friction temperature dependence is a function of the type of oscillations and sample orientation. For three basic crystallographic directions of the monocrystalline niobium the values of shear and elasticity modules have been obtained
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Additional details
Additional titles
- Original title (Russian)
- Анизотропия внутреннего трения и упругих модулей монокристаллического ниобия
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- FEI--801
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 9414159
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANISOTROPY; HIGH TEMPERATURE; INTERNAL FRICTION; MEDIUM TEMPERATURE; MONOCRYSTALS; NIOBIUM; TEMPERATURE DEPENDENCE; YOUNG MODULUS
- Descriptors DEC
- CRYSTALS; ELASTICITY; ELEMENTS; FRICTION; MECHANICAL PROPERTIES; METALS; TENSILE PROPERTIES; TRANSITION ELEMENTS
Optional Information
- Notes
- 5 refs.; 3 figs.; 1 table.