Thermodynamic modeling of the undercooled liquid in the Cu-Zr system

被引：51

作者：

Abe, T ^{[1
]}

Shimono, M ^{[1
]}

Ode, M ^{[1
]}

Onodera, H ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Computat Mat Sci Ctr, Tsukuba, Ibaraki, Japan

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 04期

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

CALPHAD; metallic glasses; crystallization; short range ordering; thermodynamics;

D O I：

10.1016/j.actamat.2005.10.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermodynamic assessment of the Cu-Zr binary system was carried out using thermodynamic data obtained over a wide range of temperatures. The associated solution model was applied to describe the short range ordering in a liquid. The glass transition was treated as a second order transition with Hillert-Jarl functions. The driving force for crystallization and time-temperature-transformation (TTT) curves were estimated from the optimized parameter set, and compared with experimental data and the results of previous thermodynamic assessments. Taking into account thermodynamic data at low temperatures, the calculated driving force was found to be lower than the results of previous assessments. Consequently, the nose of the TTT curve was shifted to a longer time. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：909 / 915

页数：7

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