Preparation of Al-20Cu Alloy in Solid-liquid Mixed Casting

Chen Kui; Gao Wenli; Huang Yani; He Jianjun; Chen Zhenhua

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Preparation of Al-20Cu Alloy in Solid-liquid Mixed Casting
Issue 2, Pages: 93-95(2006)
Published： 2006 ，
DOI：

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[1]陈葵,高文理,黄雅妮,何建军,陈振华.AL-20CU合金的固液混合铸造[J].特种铸造及有色合金,2006(02):93-95+62.

Chen Kui, Gao Wenli, Huang Yani, et al. Preparation of Al-20Cu Alloy in Solid-liquid Mixed Casting. [J]. Special Casting & Nonferrous Alloys (2):93-95(2006)
[1]陈葵,高文理,黄雅妮,何建军,陈振华.AL-20CU合金的固液混合铸造[J].特种铸造及有色合金,2006(02):93-95+62. DOI：

Chen Kui, Gao Wenli, Huang Yani, et al. Preparation of Al-20Cu Alloy in Solid-liquid Mixed Casting. [J]. Special Casting & Nonferrous Alloys (2):93-95(2006) DOI：

摘要

采用固液混合铸造工艺制备了AL-20CU合金

并利用光学显微镜和扫描电镜等手段对合金的组织和性能进行了研究。结果表明

合金中的Α-AL晶粒明显细化

Α-AL晶粒尺寸控制在100ΜM以内

粗大的枝晶消除

晶粒呈球状形貌;合金的CUAL2-AL（CU）共晶组织片间距减小;合金的力学性能显著提高。与普通铸造相比

抗拉强度由112MPA提高到205MPA

伸长率由0.5%提高到3.5%。

Abstract

The microstructure and mechanical properties of Al-20Cu alloy prepared by solid-liquid mixed casting were investigated by OP and SEM.The results show that grain size of α-Al phase in the alloy can be refined obviously

which is controlled less than 100 μm and spheroidized

and coarse dendrite can be eliminated.The eutectic lamellar spacing of CuAl

-Al（Cu） in the alloy is reduced.Compared with those of the alloy in conventional casting

the tensile strength and elongation of the alloy in liquid-solid mixed casting are increased from 112 MPa to 205 MPa

and from 0.5% to 3.5%

respectively.