HIGH-TEMPERATURE ELASTIC-CONSTANTS OF GOLD SINGLE-CRYSTALS

被引：48

作者：

COLLARD, SM ^{[1
]}

MCLELLAN, RB ^{[1
]}

机构：

[1] RICE UNIV, DEPT MECH ENGN & MAT SCI, HOUSTON, TX 77251 USA

来源：

ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 12期

关键词：

D O I：

10.1016/0956-7151(91)90048-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Elastic wave velocity measurements in two oriented gold single-crystals have been measured from 270 to 1280 K. The adiabatic elastic constants c11, c12 and c44, deduced from the elastic wave velocities, are in excellent agreement with previous measurements at low temperatures, but exhibit a negative modulus defect at high temperatures. Calculated values of the aggregate elastic properties (shear and Young's moduli) are in excellent agreement with measured values in the same temperature range. The results have been discussed in terms of a simple extension of the harmonic model in which the shift in the frequency spectrum due to volume changes is considered.

引用

页码：3143 / 3151

页数：9

共 43 条

[1]

ALEKSANDROV KS, 1966, SOV PHYS DOKL, V10, P893

[2]

CHANG JA, 1966, J APPL PHYS, V37, P3567

[3] MODULUS DEFECT IN THE NOBLE-METALS [J].

COLLARD, SM ;

MCLELLAN, RB .

SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (04) :623-627

[4] GRAIN-BOUNDARY RELAXATION IN ALUMINUM [J].

COLLARD, SM ;

MCLELLAN, RB .

SCRIPTA METALLURGICA ET MATERIALIA, 1991, 25 (03) :525-528

[5]

COTTERILL RMJ, 1967, LATTICE DEFECTS THEI

[6] CHANGE OF ELASTIC-CONSTANTS DUE TO INTERSTITIALS [J].

DEDERICHS, PH ;

LEHMANN, C ;

SCHOLZ, A .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1975, 20 (02) :155-163

[7] A THEORETICAL ESTIMATE OF THE EFFECT OF RADIATION ON THE ELASTIC CONSTANTS OF SIMPLE METALS [J].

DIENES, GJ .

PHYSICAL REVIEW, 1952, 86 (02) :228-234

[8] THE EFFECT OF QUENCHED-IN VACANCIES ON THE ELASTIC MODULUS OF ALUMINUM [J].

FOLWEILER, RC ;

BROTZEN, FR .

ACTA METALLURGICA, 1959, 7 (11) :716-721

[9] A quantum mechanical investigation of the cohesive forces of metallic copper [J].

Fuchs, K ;

Wills, HH .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1935, 151 (A874) :0585-0602

[10]

Fuchs K., 1936, P ROY SOC LOND A MAT, V153, P622

← 1 2 3 4 5 →