Quantification of Rapidly Solidified Microstructure of Al-Fe Droplets Using Correlation Length Analysis

被引：0
|
作者：
P. Kuchnio
A. Tetervak
C. Watt
H. Henein
N. Provatas
机构：
[1] McMaster University,Department of Materials Science and Engineering
[2] University of Alberta,Department of Chemical and Materials Engineering
来源：
Metallurgical and Materials Transactions A | 2009年 / 40卷
关键词：
Correlation Length; Solute Segregation; Tomographic Slice; Nozzle Plate; Dendrite Growth Velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel characterization technique for quantifying solute segregation and primary phase formation in rapidly solidified spray-atomized powders is presented. The method uses the two-point correlation function to analyze solute concentration maps obtained by X-ray tomography analysis. The two-point correlation function analysis enables a statistical characterization of the scale of structure in solidified powders, yielding information about the in-plane primary phase size, spacing, and anisotropy as a function of depth through the sample. The technique is used to study the microstructure of Al-Fe powders solidified at different cooling rates. The change in spacing as a function of cooling conditions and depth through several samples is characterized.
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页码：196 / 203
页数：7
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