TRANSFORMATIONS PRECEDING AMORPHIZATION IN CR-TI AND CR-TI-FE BETA-PHASES

被引：10

作者：

WIRZ, C ^{[1
]}

BLATTER, A ^{[1
]}

BALTZER, N ^{[1
]}

VONALLMEN, M ^{[1
]}

机构：

[1] CENDRES & MET SA,CH-2501 BIEL,SWITZERLAND

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.42.6993

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nonequilibrium bcc solid solutions of Cr-Ti and Cr-Ti-Fe, obtained by quenching bulk material at a moderate cooling rate, undergo partial solid-state amorphization during annealing at a relatively low temperature in the spinodal range. Cyclic and isothermal measurements of the specific heats, the coefficients of thermal expansion, and the resistivities, as well as x-ray diffraction, were performed to examine the vitrification reactions and the configurations involved. The data reveal that vitrification involves a sequence of events led by an exothermic reaction that appears to be displacive in nature. The resulting structure, although crystalline by configuration, displays characteristic features of amorphous materials such as a glass transition. Configurational amorphization only occurs gradually at temperatures above the glass transition. © 1990 The American Physical Society.

引用

页码：6993 / 6999

页数：7

共 34 条

[1] REVERSIBLE STRUCTURAL RELAXATION IN METALLIC GLASSES [J].