Fourth-order elastic constants of β-brass

Fourth-order elastic constants of β-brass

Combinations of the fourth-order elastic constants of beta -brass (Cu--44.3Zn, Cu--48.3Zn) were calculated using the measured second-order and third-order elastic constants and the expressions for the effective elastic constants of a cubic crystal obtained from finite-strain theory. The present calc...

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Veröffentlicht in:International journal of thermophysics 1989-07, Vol.10 (4), p.899-902
Hauptverfasser: RAMJI RAO, R, LEDBETTER, H
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Elasticity, elastic constants
Elasticity. Plasticity
Exact sciences and technology
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Mechanical properties of solids
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
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Zusammenfassung:Combinations of the fourth-order elastic constants of beta -brass (Cu--44.3Zn, Cu--48.3Zn) were calculated using the measured second-order and third-order elastic constants and the expressions for the effective elastic constants of a cubic crystal obtained from finite-strain theory. The present calculations show that the Cauchy relations for the fourth-order elastic constants in beta -brass are not satisfied. This implies that noncentral or many-body forces occur in this material. The higher-Zn alloy shows lower magnitudes of the fourth-order elastic constants and a larger Cauchy discrepancy. 5 ref.--AA
ISSN:0195-928X
1572-9567
DOI:10.1007/BF00514484