Influence of Electromagnetic Field on the Liquidus and Solidus Temperatures of 7075 Al Alloy

Ban Chunyan  Cui Jianzhong  Ba Qixian  Zhang Beijiang

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Influence of Electromagnetic Field on the Liquidus and Solidus Temperatures of 7075 Al Alloy
Issue 1, Pages: 26-27(2004)
Published： 2004 ，
DOI：

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[1]班春燕,崔建忠,巴启先,张北江.电磁场对7075铝合金液固相线温度的影响[J].特种铸造及有色合金,2004(01):26-27+86.

Ban Chunyan Cui Jianzhong Ba Qixian Zhang Beijiang. Influence of Electromagnetic Field on the Liquidus and Solidus Temperatures of 7075 Al Alloy. [J]. Special Casting & Nonferrous Alloys (1):26-27(2004)
[1]班春燕,崔建忠,巴启先,张北江.电磁场对7075铝合金液固相线温度的影响[J].特种铸造及有色合金,2004(01):26-27+86. DOI：

Ban Chunyan Cui Jianzhong Ba Qixian Zhang Beijiang. Influence of Electromagnetic Field on the Liquidus and Solidus Temperatures of 7075 Al Alloy. [J]. Special Casting & Nonferrous Alloys (1):26-27(2004) DOI：

摘要

分别使 70 75铝合金在磁场强度为 0 .0 6T的直流磁场或交流磁场作用下凝固

通过在凝固过程中测定电阻温度曲线

确定了合金在不同条件下凝固的液相线和固相线温度。试验结果表明 :合金在直流磁场中凝固

液、固相线温度均明显降低

液相线温度由未加磁场试样的 63 0℃降低到 62 7.5℃

固相线温度由未加磁场时的 5 2 0℃降低到 5 10℃

同时结晶温度间隔变大 ;而在交流磁场中凝固的试样

其液相线和固相线温度均明显提高

液相线温度比没有磁场时升高了 7.5℃

固相线温度升高了 10℃

并且结晶温度间隔变小。

Abstract

The 7075 Al alloys were solidified under DC or AC magnetic field with magnetic density 0.06 T respectively. The liquidus and solidus temperatures of the alloy at different conditions were determined by recording resistance-temperature curves during solidification. The results showed that the liquidus and solidus temperatures of the alloy decreased from 630 ℃ to 627.5 ℃and from 520 ℃ to 510 ℃ respectively with widened solidification interval in DC magnetic field while both the liquidus and solidus temperatures of the alloy increased by 7.5 ℃ and by 10 ℃ respectively with narrowed solidification interval in AC magnetic field.