Study of frequency dependence modulus of bulk amorphous alloys around the glass transition by dynamic mechanical analysis

被引：31

作者：

Lee, ML

Li, Y

Feng, YP

Carter, CW

机构：

[1] Natl Univ Singapore, Singapore MIT Alliance, AMMNS Programme, Singapore 117576, Singapore

[2] Natl Univ Singapore, Dept Mat Sci, Singapore 119260, Singapore

[3] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore

[4] MIT, Sch Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

INTERMETALLICS | 2002年 / 10卷 / 11-12期

关键词：

glasses; metallic; thermal stability; mechanical testing;

D O I：

10.1016/S0966-9795(02)00143-7

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：

A Dynamic Mechanical Analyzer (DMA) was used to study the frequency dependence of storage and loss moduli of amorphous Pd40Ni10Cu30P20 and La55Al25CU10Ni5Co5 alloys over a broad frequency range around their glass transition temperatures. The amorphous samples were subjected to continuous heating at a constant frequency. Their storage moduli, E', exhibited a similar sigmoidal change from a high solid state value to a low value of a supercooled liquid over the glass transition region but decaying at a different degree. The loss moduli, E", were characterized by a relaxation peak. The peak frequencies obtained were then fitted to the Vogel-Fulcher-Tamman (VFT) equation and the scaling law equation. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1061 / 1064

页数：4

共 12 条

[1] DETERMINATION OF THE ACTIVATION-ENERGIES FOR ALPHA-TRANSITION AND BETA-TRANSITION OF A SYSTEM CONTAINING A DIGLYCIDYL ETHER OF BISPHENOL-A (DGEBA) AND 1,3-BISAMINOMETHYLCYCLO-HEXANE (1,3-BAC) [J].