环缝式电磁搅拌对7075铝合金热处理的影响

高志华; 徐骏; 张志峰; 汤孟欧; 刘国钧

doi:10.15980/j.tzzz.2014.02.022

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环缝式电磁搅拌对7075铝合金热处理的影响
Effects of Annular Electromagnetic Stirring Preparation Process on the Homogenization Treatment Time of 7075 Aluminium Alloy
2014年34卷第2期页码：163-166
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.02.022

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[1]高志华,徐骏,张志峰,汤孟欧,刘国钧.环缝式电磁搅拌对7075铝合金热处理的影响[J].特种铸造及有色合金,2014,34(02):163-166.

Gao Zhihua, Xu Jun, Zhang Zhifeng, et al. Effects of Annular Electromagnetic Stirring Preparation Process on the Homogenization Treatment Time of 7075 Aluminium Alloy[J]. Special Casting & Nonferrous Alloys, 2014,34(2):163-166.
[1]高志华,徐骏,张志峰,汤孟欧,刘国钧.环缝式电磁搅拌对7075铝合金热处理的影响[J].特种铸造及有色合金,2014,34(02):163-166. DOI： 10.15980/j.tzzz.2014.02.022.

Gao Zhihua, Xu Jun, Zhang Zhifeng, et al. Effects of Annular Electromagnetic Stirring Preparation Process on the Homogenization Treatment Time of 7075 Aluminium Alloy[J]. Special Casting & Nonferrous Alloys, 2014,34(2):163-166. DOI： 10.15980/j.tzzz.2014.02.022.

摘要

研究了无电磁搅拌、普通电磁搅拌和环缝式电磁搅拌等不同制备方法对7075铝合金均匀化热处理时间的影响。结果表明

相比于无电磁搅拌和普通电磁搅拌

环缝式电磁搅拌工艺制备的7075铝合金的凝固组织更加均匀细小。同时通过观察不同制备方法得到的7075铝合金均匀化热处理后的显微组织变化规律

发现环缝式电磁搅拌工艺制备的7075铝合金均匀化热处理的时间明显缩短。均匀化热处理后合金硬度和电导率的变化亦证明了这点。

Abstract

Effects of non-electromagnetic stirring（N-EMS）、conventional electromagnetic stirring（EMS）and annular electromagnetic stirring（A-EMS）preparation process on homogenization treatment time of 7075 aluminium alloy were investigated.The results indicate that

compared with N-EMS and EMS

the A-EMS process exhibits superior grain refinement ability.The microstructures of 7075 aluminum alloy were observed at different preparation methods after different homogenization heat treatment time.The results reveal that A-EMS preparation process can decrease the time of homogenization treatment obviously.The changes of alloy hardness and electrical conductivity after different homogenization treatment also proved the result.