INTERNAL-FRICTION, THERMAL AND STRUCTURAL-ANALYSIS OF NANOCRYSTALLINE ALUMINUM

被引：9

作者：

ALSADI, A ^{[1
]}

BONETTI, E ^{[1
]}

MATTIOLI, P ^{[1
]}

VALDRE, G ^{[1
]}

机构：

[1] CNR, GRP NAZL STRUTTURA MAT, I-40126 BOLOGNA, ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 211卷

关键词：

D O I：

10.1016/0925-8388(94)90550-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Elastic energy dissipation and dynamic elasticity modulus measurements were performed on nanocrystalline aluminium obtained by mechanical attrition and cold consolidation. Information has so far been obtained on the structural stability of the specimens with different grain sizes and defect contents. The anelasticity spectra from specimens where the ultimate grain size was reached (20 nm) show a well-defined relaxation process with an activation energy of 0.8+/-0.1 eV. Differential scanning calorimetry and transmission electron microscopy observations confirmed the defect density dependence and behaviour of the anelastic spectra.

引用

页码：489 / 493

页数：5

共 18 条

[1] DEFECT STUDIES OF THIN-LAYERS BY THE VIBRATING-REED TECHNIQUE [J].