The effect of cooling rate and composition on the secondary dendrite arm spacing during solidification.: Part I:: Al-Cu-Si alloys

被引：24

作者：

Rontó, V

Roósz, A ^{[1
]}

机构：

[1] MTA, Mat Sci Res Grp, H-3515 Miskolc, Egyetemvaros, Hungary

[2] Univ Miskolc, Fac Mat & Met Engn, Dept Met Phys, H-3515 Miskolc, Egyetemvaros, Hungary

来源：

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2001年 / 13卷 / 06期

关键词：

secondary dendrite arm spacing; local solidification time; cooling rate; DTA method; concentration dependence;

D O I：

10.1080/13640461.2001.11819415

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Al-Cu-Si alloys of six different compositions have been solidified by means of the Differential Thermal Analysis (DTA) method. On the basis of the measurement results it is stated that the secondary dendrite arm spacing (lambda (2,f)) can be determined with suitable accuracy as a function of the composition (C-0,C-Cu; C-0,C-Si), using the local solidification time (t(f)) or the cooling rate ((T) overdot(L)) by means of the following equations: lambda (2,f) = 34.9 X C-0,Cu(-0.333) X C-0,Si(-0.145) X (t(f))(0.208); lambda (2,f) = 77.09 X C-0,Cu(-0.1989) X C-0,Si(-0.078) X ((T) overdot(L))(-0.252).

引用

页码：337 / 342

页数：6

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