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

页码：15 / +

页数：2

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