Solid-liquid interfacial energy of the eutectoid β phase in the Al-Zn eutectic system

被引：71

作者：

Keslioglu, K ^{[1
]}

Marasli, N ^{[1
]}

机构：

[1] Erciyes Univ, Fac Art & Sci, Dept Phys, TR-38039 Kayseri, Turkey

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 369卷 / 1-2期

关键词：

Al-Zn alloy; Gibbs-Thomson coefficient; solid-liquid interface energy; grain boundary energy;

D O I：

10.1016/j.msea.2003.11.033

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The equilibrated grain boundary groove shapes for the solid beta phase in Al-Zn liquid solutions were observed on quenched samples. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient for solid beta (Al-84 wt.% Zn) in Al-Zn liquid solutions has been determined to be (3.41 +/- 0.14) x 10(-8) Km with a numerical method. The solid-liquid interfacial energy between solid beta and Al-Zn liquid solution has been obtained to be (106.94 +/- 9.62) X 10(-3) J m(-2) from the Gibbs-Thomson equation. The grain boundary energy for the same material has been calculated to be (204.72 +/- 22.52) X 10(-3) J m(-2) from the observed grain boundary groove shapes. The thermal conductivities of the solid and liquid phases for Al-95 wt.% Zn and Al-84 wt.% Zn systems have also been measured. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：294 / 301

页数：8

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