锂消除纯铜铸造枝晶组织的研究

朱达川; 陈家钊; 周秀丽; 涂铭旌; 张自明; 胡兆敏

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锂消除纯铜铸造枝晶组织的研究
The Effect of Lithium on Casting Structures of Pure Copper
1999年第4期
纸质出版日期： 1999 ，
DOI：

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[1]朱达川,陈家钊,周秀丽,涂铭旌,张自明,胡兆敏.锂消除纯铜铸造枝晶组织的研究[J].特种铸造及有色合金,1999(04):3-4.

Zhu Dachuan Chen Jiazhao Zhou Xiuli Tu Mingjing. The Effect of Lithium on Casting Structures of Pure Copper[J]. Special Casting & Nonferrous Alloys, 1999,(4).
[1]朱达川,陈家钊,周秀丽,涂铭旌,张自明,胡兆敏.锂消除纯铜铸造枝晶组织的研究[J].特种铸造及有色合金,1999(04):3-4. DOI：

Zhu Dachuan Chen Jiazhao Zhou Xiuli Tu Mingjing. The Effect of Lithium on Casting Structures of Pure Copper[J]. Special Casting & Nonferrous Alloys, 1999,(4). DOI：

摘要

向熔融三号工业纯Ｃｕ中加入微量Ｌｉ，得到表面光滑、内部致密的铜锭。研究Ｌｉ对工业纯Ｃｕ结晶形态的影响，结果表明：Ｌｉ能消除合金凝固的枝晶区并使之转变为等轴晶区。最后从凝固理论及凝固过程热分析出发，初步探讨其成因

Abstract

A series of copper ingots with smooth surface and inner soundness have been gotten for different lithium additions to molten copper.The effect of lithium on casting structures of pure coppers has been researched.The results showed that the dendritic crystal area of alloy was eliminated by Li addition and the equiaxed strcture was substitued for dentritic crystal.On the basis of solidification theory and DTA curve

the reason for structure transformation is explained.