SOLUTE TRAPPING BY RAPID SOLIDIFICATION

被引：209

作者：

BAKER, JC

CAHN, JW

机构：

[1] Department of Metallurgy and Materials Science, Massachusetts Institute of Technology, Cambridge, MA

来源：

ACTA METALLURGICA | 1969年 / 17卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0001-6160(69)90116-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The zinc-rich solid phase in zinc-cadmium alloys has been studied after splat quenching to -196°C. Alloys containing from zero to 5 wt.% were examined by X-ray lattice parameter measurements. The compositions of the resulting solid were found to be larger than the stable or metastable solidus composition at any temperature and therefore a departure from local equilibrium at the liquid-solid interface occurred in the solid. The sign of the departure is opposite to that predicted by theories of Jackson and Borisov for non-equilibrium alloy solidification, which therefore are invalid. Key aspects of a correct theory are discussed. © 1969.

引用

页码：575 / &