Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag

被引：6
|
作者：
Senninger, Oriane [1 ]
Peters, Matthew [1 ]
Voorhees, Peter W. [1 ]
机构：
[1] Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 05期
关键词：
PB-SN; SYSTEM; LAMELLAR; LIQUID; ALLOYS; PLANAR; SOLIDIFICATION; ENERGIES; JACKSON;
D O I：
10.1007/s11661-018-4488-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure developed by two-phase lamellar eutectics - in Al-Cu and Al-Cu-Ag alloys is analyzed. A model of two-phase eutectic growth in multicomponent alloys is used to determine the scaling law of the eutectic microstructure using the alloy thermophysical properties. The application of the model to these alloys shows that the addition of Ag to Al-Cu alloys does not significantly change the length scale of the microstructure, which is in agreement with previous experimental studies. This is explained by the combined phenomena of the decrease in interface energies with the addition of Ag and the superheating of the phase interface induced by the Ag composition profile. (C) The Minerals, Metals & Materials Society and ASM International 2018
引用
收藏
页码：1692 / 1707
页数：16
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