Thermodynamic Analysis of Chemical Reaction in Melting Process of Mg-Li Alloy and Microstructure of Ingot

Cao Furong1; Ding Hua1; Li Yinglong1; Chen Yanbo1; Cui Jianzhong2

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Thermodynamic Analysis of Chemical Reaction in Melting Process of Mg-Li Alloy and Microstructure of Ingot
Vol. 29, Issue 9, Pages: 869-871(2009)
Published： 2009 ，
DOI：

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[1]曹富荣,丁桦,李英龙,陈彦博,崔建忠.Mg-Li合金熔炼反应的热力学分析及铸锭显微组织[J].特种铸造及有色合金,2009,29(09):869-871+783-784.

Cao Furong1, Ding Hua1, Li Yinglong1, et al. Thermodynamic Analysis of Chemical Reaction in Melting Process of Mg-Li Alloy and Microstructure of Ingot. [J]. Special Casting & Nonferrous Alloys 29(9):869-871(2009)
[1]曹富荣,丁桦,李英龙,陈彦博,崔建忠.Mg-Li合金熔炼反应的热力学分析及铸锭显微组织[J].特种铸造及有色合金,2009,29(09):869-871+783-784. DOI：

Cao Furong1, Ding Hua1, Li Yinglong1, et al. Thermodynamic Analysis of Chemical Reaction in Melting Process of Mg-Li Alloy and Microstructure of Ingot. [J]. Special Casting & Nonferrous Alloys 29(9):869-871(2009) DOI：

摘要

采用LiCl与LiF质量比为3:1的熔剂覆盖和氩气保护

在铸铁坩埚中熔炼

在铜模中浇注制备了Mg-6.1Li、Mg-8.2Li、Mg-10.8Li合金铸锭

获得了满意的铸锭显微组织。化学反应热力学分析表明

石墨、MgO不适合作Mg-Li合金熔铸的工具材质

适合Mg-Li合金熔铸的工具材质是铸铁、低碳钢、Mo、Cu、SiC。对反应进行了热力学分析

与试验结果基本一致。

Abstract

Mg-6.1Li

Mg-8.2 Li and Mg-10.8Li

alloy ingots were prepared by melting in cast-iron crucible and casting in copper mould under the coverage of lithium chloride and lithium fluoride （LiCl:LiF=3:1） and the protection of argon

obtaining desirable ingot microstructure. Chemical reaction thermodynamic analysis reveals that graphite and magnesia are unsuitable as tool materials for melting and casting Mg-Li alloy

while cast iron

low carbon steel

copper and silicon carbide are suitable as tool materials. Thermodynamic analysis is basically consistent with the experimental results and relevant literatures.