Effects of Internal Cooling with Annular Electromagnetic Stirring on the Refinement of Al<sub>3</sub>Zr and Microstructure of Al-Zn-Mg-Cu Alloy

Guan Tianyang; Zhang Zhifeng; Xu Yongtao; Bai Yuelong; Wang Ping

doi:10.15980/j.tzzz.2020.01.003

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Effects of Internal Cooling with Annular Electromagnetic Stirring on the Refinement of Al₃Zr and Microstructure of Al-Zn-Mg-Cu Alloy
Vol. 40, Issue 1, Pages: 12-15(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.01.003

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[1]关天洋,张志峰,徐永涛,白月龙,王平.控冷环缝电磁搅拌对Al-Zn-Mg-Cu合金初生Al_3Zr相及组织的影响[J].特种铸造及有色合金,2020,40(01):12-15.

Guan Tianyang, Zhang Zhifeng, Xu Yongtao, et al. Effects of Internal Cooling with Annular Electromagnetic Stirring on the Refinement of Al₃Zr and Microstructure of Al-Zn-Mg-Cu Alloy. [J]. Special Casting & Nonferrous Alloys 40(1):12-15(2020)
[1]关天洋,张志峰,徐永涛,白月龙,王平.控冷环缝电磁搅拌对Al-Zn-Mg-Cu合金初生Al_3Zr相及组织的影响[J].特种铸造及有色合金,2020,40(01):12-15. DOI： 10.15980/j.tzzz.2020.01.003.

Guan Tianyang, Zhang Zhifeng, Xu Yongtao, et al. Effects of Internal Cooling with Annular Electromagnetic Stirring on the Refinement of Al₃Zr and Microstructure of Al-Zn-Mg-Cu Alloy. [J]. Special Casting & Nonferrous Alloys 40(1):12-15(2020) DOI： 10.15980/j.tzzz.2020.01.003.

摘要

通过对比施加与未施加控冷环缝式电磁搅拌（IC-AEMS）熔体均匀化处理技术

对Al-Zn-Mg-Cu合金初生Al

Zr相的析出行为以及组织细化的影响进行了研究。结果表明

施加IC-AEMS后

Zr粒子形貌从大尺寸针状与板状变成细小弥散分布的块状;此外

相比未施加IC-AEMS处理的Al-Zn-Mg-Cu合金的凝固组织

施加IC-AEMS后

合金细化效果与组织均匀性得到提高

平均晶粒尺寸由387μm减小至218μm。

Abstract

In order to understand influence of internal cooling with annular electromagnetic stirring（IC-AEMS）treatment

the precipitation behavior of the primary Al

Zr phase and the solidification structure of Al-Zn-Mg-Cu alloy

was investigated by optical microscope（OM）and scanning electron microscope（SEM）.The results show that with IC-AEMS

the morphology of Al

Zr particles is transformed from needle and plate-like to small and finely distributed blocks.Compared with the microstructure of the Al-Zn-Mg-Cu alloy without IC-AEMS

the refining effect and uniformity of the microstructure is improved greatly with IC-AEMS treatment

where the average grain size is reduced from 387μm to 218μm.