Effect of solidification rate and composition on segregation in Al-Li-Cu-Zr alloys

被引：2
|
作者：
Ahmadia, S. [1 ]
Shokuhfar, A. [1 ]
Hadavi, M. M. [2 ]
Rezaei, A. [1 ]
Azimi, H. [2 ]
机构：
[1] KN Toosi Univ Technol, Fac Mech Engn, Dept Mat Sci, Tehran, Iran
[2] Amirkabir Univ Technol, Fac Mat Sci, Tehran, Iran
来源：
DIFFUSION IN SOLIDS AND LIQUIDS: MASS DIFFUSION | 2006年 / 258-260卷
关键词：
Al-Li-Cu-Zr; solidification; segregation; DTA;
D O I：
10.4028/www.scientific.net/DDF.258-260.15
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, solidification and segregation of Al-Li-Cu-Zr alloys have been investigated. Results show that shape of ingots and amount of lithium can change solidification essence. Increasing solidification rate, not only eliminates grain-refining effect of zirconium but also causes coarse segregation of copper in grain boundaries (negative segregation). Increasing amount of lithium in Al-Cu-Li-Zr alloys can change the solubility of other alloying elements (Cu, Zr) and increase solidification range and microsegregation of copper in structure.
引用
收藏
页码：15 / +
页数：2
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